Field guides

Know what you're looking at before you bid. 68 guides on authentication, grading and value.

Latest guides

🪙 US CoinsLincoln Cent Key Dates Every Pocket-Change Hunter Should KnowThe 1909-S VDB, the 1955 doubled die and the famous 1943 copper — which Lincoln cents are worth real money, and how the fakes are made.Sep 22, 2026 · 6 min read

🪙 US CoinsHow to Spot a Fake Morgan Silver Dollar Before You BidCounterfeit Morgans flood online marketplaces. Weight, diameter, mint marks and a few quick checks will weed out most of them.Sep 20, 2026 · 6 min read

⚾ Sports CardsGraded Cards 101: What a PSA 10 Really Means (and When It's Worth Paying For)Grading can multiply a card's value — or add nothing. Here's how the 1–10 scale works and how to shop slabs smartly.Sep 18, 2026 · 6 min read

⚡ Pokémon & TCGIs Your Pokémon Card Worth Anything? Holos, Editions and Fakes Explained1st Edition, Shadowless, Unlimited — what the terms mean, which Base Set cards collectors want, and how to spot a counterfeit.Sep 16, 2026 · 2 min read

⌚ Vintage WatchesVintage Watch Hunting: 7 Checks Before You Hit “Buy It Now”Redials, frankenwatches and tired movements are everywhere. A seven-point checklist for buying vintage mechanical watches online.Sep 15, 2026 · 6 min read

⚾ Sports CardsPrice Check Like a Pro: Using Sold Listings Before You BidAsking prices lie; sold prices don't. A step-by-step method for finding what a card — or any collectible — really sells for.Sep 12, 2026 · 2 min read

Coins & Currency · 18

🪙 US CoinsLincoln Cent Key Dates Every Pocket-Change Hunter Should KnowThe 1909-S VDB, the 1955 doubled die and the famous 1943 copper — which Lincoln cents are worth real money, and how the fakes are made.Sep 22, 2026 · 6 min read

🪙 US CoinsHow to Spot a Fake Morgan Silver Dollar Before You BidCounterfeit Morgans flood online marketplaces. Weight, diameter, mint marks and a few quick checks will weed out most of them.Sep 20, 2026 · 6 min read

🌍 World CoinsAncient Coins for Beginners: Buying Your First Roman DenariusHold 2,000 years of history for less than a nice dinner. What to look for in a Roman silver denarius, and how to avoid fakes and bad lots.Sep 10, 2026 · 2 min read

💵 Paper MoneyStar Notes, Silver Certificates and Fancy Serials: What Makes a Bill ValuableSome banknotes are worth far more than face value. Learn to spot star notes, old silver certificates and serial numbers collectors chase.Sep 7, 2026 · 2 min read

✉️ StampsStamp Collecting 101: Perforations, Gum and the Condition TrapsTwo stamps that look identical can differ in value a hundredfold. How to read perforations, gum, centering and watermarks before you buy.Sep 3, 2026 · 2 min read

🪙 US CoinsBuffalo Nickel Key Dates, Varieties and the Fakes That Follow ThemFrom the 1913 Type 1 and Type 2 to the famous 1937-D three-legged, here's how to hunt Buffalo nickel keys without falling for acid-restored dates or altered coins.Aug 9, 2026 · 6 min read

🪙 US CoinsHow Coin Grading Works: A Plain-English Guide to the Sheldon ScaleWhat MS-65, VF-20 and details grades really mean, how strike, luster and eye appeal shape a grade, and why the grading service on the slab matters when you buy.Aug 8, 2026 · 4 min read

🪙 US CoinsJunk Silver Explained: Pre-1965 Coins, 40% Halves and War NickelsWhat counts as junk silver, how much silver is really inside 90% and 40% coins and war nickels, and how to buy circulated silver online without getting burned.Aug 7, 2026 · 3 min read

🪙 US CoinsHow to Tell If a Coin Has Been Cleaned, Whizzed, Dipped or RetonedCleaning can cut a coin's value dramatically. Learn to spot hairlines, whizzing, over-dipping and artificial toning before you pay full price for a damaged coin.Aug 6, 2026 · 3 min read

🌍 World CoinsBuying British Gold Sovereigns: Monarchs, Mints and Fakes to AvoidThe gold sovereign is the world's most famous bullion coin with a collector side. Learn the monarchs, branch mints, key specs and how to spot counterfeits online.Aug 5, 2026 · 3 min read

🌍 World CoinsValuable Canadian Coins: Silver Eras, Key Dates, Errors and Mint SetsWhich Canadian coins collectors actually hunt for, from the silver era and famous key dates to die varieties, Royal Canadian Mint sets and grading tips for buyers.Aug 4, 2026 · 3 min read

🌍 World CoinsBullion vs Numismatic Coins: When Collector Value Beats Metal ValueSilver Eagles, Maple Leafs and Britannias can be bullion or collectibles. Learn how premiums over spot work, when proofs matter, and how to avoid fake bullion.Aug 3, 2026 · 3 min read

💵 Paper MoneyError Banknotes: How to Spot Real Printing Mistakes and Fake ErrorsMisaligned prints, cutting errors, inverted backs and gutter folds can turn a bill into a collectible. Here's how genuine errors happen and how fakes are made.Aug 2, 2026 · 4 min read

💵 Paper MoneyGenuine Confederate Currency vs Reproductions: How to Tell Them ApartMost Confederate notes found in attics and online are souvenir copies. Learn the paper, printing and facsimile clues that separate real notes from reproductions.Aug 1, 2026 · 3 min read

💵 Paper MoneyAre $2 Bills Worth Anything? Red Seals, Star Notes and Common MythsMost $2 bills are worth face value, but some aren't. Learn how series, red and green seals, star notes and condition separate ordinary deuces from collectible ones.Jul 31, 2026 · 3 min read

✉️ StampsUS Stamp Errors and Freaks: Inverts, Imperfs and the Fakes Behind ThemPrinting mistakes create some of philately's most exciting stamps — and some of its most common fakes. Learn to tell real errors from clever alterations.Jul 30, 2026 · 3 min read

✉️ StampsFirst Day Covers: Why Most Are Common and Which Ones Collectors ChaseFirst day covers are everywhere in stamp lots, and most sell for little. Here's how cachets, age and condition separate the ordinary from the desirable.Jul 29, 2026 · 3 min read

✉️ StampsBuying Stamp Collections Online: How to Read Albums, Lots and Bulk BoxesA big album can be a treasure trove or a picked-over shell. Learn how to read lot photos, judge catalog value claims and buy stamp collections with confidence.Jul 28, 2026 · 3 min read

Cards & Memorabilia · 14

⚾ Sports CardsGraded Cards 101: What a PSA 10 Really Means (and When It's Worth Paying For)Grading can multiply a card's value — or add nothing. Here's how the 1–10 scale works and how to shop slabs smartly.Sep 18, 2026 · 6 min read

⚡ Pokémon & TCGIs Your Pokémon Card Worth Anything? Holos, Editions and Fakes Explained1st Edition, Shadowless, Unlimited — what the terms mean, which Base Set cards collectors want, and how to spot a counterfeit.Sep 16, 2026 · 2 min read

⚾ Sports CardsPrice Check Like a Pro: Using Sold Listings Before You BidAsking prices lie; sold prices don't. A step-by-step method for finding what a card — or any collectible — really sells for.Sep 12, 2026 · 2 min read

🎬 Movie & Music MemorabiliaAutographs 101: How to Avoid Forged SignaturesForgeries, autopens and secretarial signatures dominate the autograph market. Here's how to protect yourself before you buy.Aug 28, 2026 · 2 min read

⚾ Sports CardsWhat Counts as a Rookie Card? RC Logos, Prospects and True RookiesNot every first card is a rookie card, and the difference can change value dramatically. Here's how RC logos, prospect cards and true rookie debates work.Jul 27, 2026 · 6 min read

⚾ Sports CardsBuying 1950s Baseball Cards: Topps, Bowman and the Condition TrapsThe 1950s gave us some of the hobby's most iconic cards. Learn the Topps and Bowman era, common condition problems and how to avoid reprints and fakes.Jul 26, 2026 · 6 min read

⚾ Sports CardsHow to Spot Trimmed, Recolored and Pressed Sports Cards Before You BuyCard doctors trim edges, rebuild corners and press out creases to fake higher grades. Learn the warning signs and why the major graders reject altered cards.Jul 25, 2026 · 3 min read

⚾ Sports CardsRefractors, Numbered Parallels and 1/1s: Modern Card Rarity ExplainedModern card products are packed with parallels, serial numbers and short prints. Learn how each type of rarity works and how to verify what you're buying.Jul 24, 2026 · 3 min read

⚡ Pokémon & TCGJapanese vs English Pokémon Cards: Quality, Sets and What Collectors WantJapanese and English Pokémon cards share artwork but differ in printing, sets and collector demand. Here's what to know before you buy either version.Jul 23, 2026 · 3 min read

⚡ Pokémon & TCGBuying Sealed Pokémon Product: How to Spot Reseals and Weighed PacksBooster boxes, packs and Elite Trainer Boxes are popular collectibles — and popular targets for resealing. Learn the checks that protect your sealed purchases.Jul 22, 2026 · 3 min read

⚡ Pokémon & TCGVintage Magic: The Gathering and the Reserved List: A Collector's GuideAlpha, Beta and Reserved List cards are among the most sought-after in gaming. Learn the editions, how counterfeits are caught and how to buy vintage Magic safely.Jul 21, 2026 · 3 min read

🎬 Movie & Music MemorabiliaVintage Movie Posters: How to Tell an Original From a ReprintSizes, fold lines, NSS numbers and linen backing all tell a poster's story. How to separate genuine theatrical paper from reprints before you buy.Jul 20, 2026 · 3 min read

🎬 Movie & Music Memorabilia1960s–70s Rock Concert Posters: First Printings, Handbills and ReprintsPsychedelic ballroom posters are wall-worthy history, but later printings and reprints abound. How to identify first printings and judge condition.Jul 19, 2026 · 3 min read

🎬 Movie & Music MemorabiliaScreen-Used Props and Costumes: How to Verify Before You BuyOwning a piece of a real production is a thrill, but replicas and weak paperwork are everywhere. How to judge provenance, documentation and red flags.Jul 18, 2026 · 3 min read

Toys & Games · 12

🦸 Action FiguresVintage Star Wars Figures: Carded, Loose and the Reproduction TrapKenner's 1978–1985 figures are a collecting cornerstone. How to judge completeness, spot reproduction weapons and understand carded values.Sep 1, 2026 · 2 min read

🏎️ Die-Cast CarsHot Wheels Redlines: How to Identify a 1968–1977 OriginalRed-striped tires and Spectraflame paint made the first Hot Wheels legendary. How to spot a genuine Redline and avoid restorations.Aug 25, 2026 · 2 min read

🧱 LEGORetired LEGO Sets: What Collectors Need to Know Before BuyingSealed or used? Complete or not? How minifigures, boxes and missing pieces affect the value of retired LEGO sets.Aug 20, 2026 · 2 min read

🦸 Action FiguresVintage G.I. Joe: 12-Inch Originals and A Real American Hero FiguresFrom Hasbro's 1964 12-inch figures to the 3¾-inch line of the 1980s, here's how to judge completeness, spot repro parts and buy vintage Joes with confidence.Jul 17, 2026 · 3 min read

🦸 Action FiguresVintage Masters of the Universe: Figures, Weapons and Repro AccessoriesMattel's 1980s He-Man line is a nostalgia heavyweight. How to check armor and weapons, spot reproduction parts and choose between carded and loose figures.Jul 16, 2026 · 3 min read

🦸 Action FiguresGeneration 1 Transformers: Completeness, Reissues and Knockoff ChecksOriginal 1980s Transformers are more than meets the eye. How to check weapons, chrome and joints, and tell vintage G1 from reissues and knockoffs.Jul 15, 2026 · 3 min read

🏎️ Die-Cast CarsLesney Matchbox Cars: Regular Wheels, Superfast and Box Types ExplainedLesney-era Matchbox models are small British classics. How to tell regular wheels from Superfast, read box types and spot restorations before you buy.Jul 14, 2026 · 3 min read

🏎️ Die-Cast CarsDie-Cast Scale Model Cars: Scales, Collector Brands and Complete BoxesFrom 1:64 to 1:18, collector-grade model cars reward careful buying. How to choose a scale, judge editions and boxes, and avoid shipping damage online.Jul 13, 2026 · 3 min read

🏎️ Die-Cast CarsVintage Tin Toys and Wind-Ups: Markings, Mechanisms and ReproductionsLithographed tin toys charm collectors with color and motion. How to read country markings, check mechanisms, judge rust and spot modern reproductions.Jul 12, 2026 · 3 min read

🧱 LEGOLEGO Minifigures: Rare Exclusives, Fakes and How to Verify Every PartTiny figures, big collecting appeal. How to spot rare exclusives, avoid fakes and custom prints, check for cracks and fading, and verify parts online.Jul 11, 2026 · 3 min read

🧱 LEGOLEGO Star Wars UCS Sets: What to Check Before You Buy a Big ShipBox condition, missing parts, applied stickers and display wear can make or break a UCS purchase. Here's how to vet a LEGO Star Wars flagship set online.Jul 10, 2026 · 3 min read

🧱 LEGOBuying Bulk LEGO by the Pound: How to Find the Good Stuff in a LotBulk LEGO lots can hide rare minifigures or a pile of clone bricks. Learn to read the photos, spot valuable pieces and clean what you buy without damage.Jul 9, 2026 · 3 min read

Watches & Jewelry · 8

⌚ Vintage WatchesVintage Watch Hunting: 7 Checks Before You Hit “Buy It Now”Redials, frankenwatches and tired movements are everywhere. A seven-point checklist for buying vintage mechanical watches online.Sep 15, 2026 · 6 min read

💍 Vintage JewelryIs It Real Gold? Reading Hallmarks on Vintage Jewelry14K, 585, GF, RGP, 925 — decode the tiny stamps on vintage jewelry and learn which ones mean solid precious metal.Sep 5, 2026 · 2 min read

⌚ Vintage WatchesBuying a Vintage Rolex Online: Service Parts, Frankens and FakesReference numbers, service dials, mismatched parts and convincing fakes — the checks that separate an honest vintage Rolex from an expensive mistake online.Jul 8, 2026 · 6 min read

⌚ Vintage WatchesVintage Seiko Buying Guide: Divers, Seiko 5s, Mods and RedialsVintage Seikos are fun, affordable and widely modified. Learn to read the case back, spot redials and aftermarket parts, and buy an original with confidence.Jul 7, 2026 · 6 min read

⌚ Vintage WatchesAntique Pocket Watches: A Buyer's Guide to Cases, Winding and GradesKey-wind or stem-wind, hunter or open face, gold-filled or solid — learn what matters when buying an antique pocket watch online, and what to ask the seller.Jul 6, 2026 · 3 min read

💍 Vintage JewelrySigned Vintage Costume Jewelry: Reading Marks and Spotting FakesTrifari, Eisenberg, Haskell and more — how maker's marks changed over time, how to judge rhinestones, and how to catch replaced stones and fake signatures.Jul 5, 2026 · 3 min read

💍 Vintage JewelryAntique Engagement Rings by Era: From Georgian to Retro, DecodedLearn the hallmarks of each antique ring era, how old mine and old European cuts differ, and how to spot reproductions, lab-created stones and weak appraisals.Jul 4, 2026 · 3 min read

💍 Vintage JewelryReal vs. Fake Pearls: How to Tell Natural, Cultured and ImitationThe tooth test, luster, drill holes, knotting and clasps all offer clues. Here's how to tell real pearls from imitations, and when to call in a gemologist.Jul 3, 2026 · 3 min read

Antiques & Art · 12

🎨 ArtOriginal or Print? How to Tell Before You Buy Art OnlineBrushstrokes, dot patterns and pencil signatures — how to tell an original painting or limited edition from a mass-produced reproduction.Aug 22, 2026 · 2 min read

🏺 AntiquesAntique or Just Old? Dating Furniture by How It Was MadeDovetails, saw marks, nails and screws are the fingerprints of furniture history. How to date a piece before you trust the listing.Aug 18, 2026 · 2 min read

🫖 Pottery & GlassDepression Glass or Reproduction? A Collector's Field TestPink, green and amber Depression glass is affordable and beautiful — and widely reproduced. How to tell the originals from the copies.Aug 14, 2026 · 2 min read

🏺 AntiquesReading Antique Silver Marks: British Hallmarks, Coin Silver and PlateLion passant, town marks, date letters, coin silver and EPNS — how to read the stamps on antique silver and tell solid silver from silverplate before you buy.Jul 2, 2026 · 3 min read

🏺 AntiquesVintage Cast Iron Cookware: How to Spot Quality, Damage and FakesGriswold, Wagner and other classic makers, how to read the markings, and how to check for cracks, warping, pitting and reproductions before you buy cast iron.Jul 1, 2026 · 3 min read

🏺 AntiquesBuying Antique Clocks: Movements, Marriages and What to Check FirstMantel, wall and tall-case clocks reward careful buyers. How to judge the movement, spot replaced parts and marriages, and ship a clock safely.Jun 30, 2026 · 3 min read

🏺 AntiquesPorcelain Advertising Signs: How to Spot the Flood of ReproductionsVintage porcelain gas, oil and soda signs are hugely popular and heavily faked. Learn to read enamel layers, chips, grommets and weight before you buy.Jun 29, 2026 · 3 min read

🫖 Pottery & GlassVintage Fiesta Ware: How to Tell Original Pieces From Modern FiestaHomer Laughlin's colorful Fiesta dinnerware has been made again since 1986. How to separate vintage pieces from new ones using marks, colors and glaze.Jun 28, 2026 · 3 min read

🫖 Pottery & GlassUranium Glass Explained: What the Green Glow Really Tells YouUranium and Vaseline glass glow vivid green under a black light. Here's what that glow proves, what it doesn't, and how to buy and handle it safely.Jun 27, 2026 · 3 min read

🫖 Pottery & GlassCollecting Roseville Pottery: Patterns, Fake Marks and Hidden RepairsRoseville is one of America's most collected art potteries — and one of the most copied. How to judge marks, glazes, damage and restoration before buying.Jun 26, 2026 · 3 min read

🎨 ArtEtching, Lithograph or Poster? How to Identify an Original PrintOriginal prints and photomechanical reproductions can look alike online. Learn to read plate marks, ink, paper and edition details before you buy.Jun 25, 2026 · 3 min read

🎨 ArtCollecting Folk Art and Outsider Art Without Getting Fooled by FakesWeathervanes, carvings, quilts and work by self-taught artists are prized for their character. How to judge age, provenance and condition before buying.Jun 24, 2026 · 3 min read

Music & Media · 4

💿 Vinyl RecordsHow to Spot a First Pressing: Matrix Numbers, Labels and Dead WaxThe secrets are etched into the run-out groove. How record collectors identify first pressings and grade vinyl before buying online.Aug 11, 2026 · 2 min read

💿 Vinyl RecordsVinyl Record Grading in Depth: Discs, Jackets and What NM Really MeansGrades make or break a vinyl purchase online. How the Goldmine scale applies to records, jackets and inserts — and how to read a listing like a pro.Jun 23, 2026 · 3 min read

💿 Vinyl RecordsCollecting Original Jazz LPs: Labels, Deep Grooves and Reissue TrapsOriginal Blue Note, Prestige and other classic jazz pressings are serious grails. Learn to read label addresses, deep grooves and dead wax to avoid reissues.Jun 22, 2026 · 3 min read

💿 Vinyl RecordsHow to Clean and Store Vinyl Records So They Last for DecadesDust, heat and bad sleeves quietly ruin records. A practical guide to brushes, cleaning fluids, machines, sleeves and storage that protects your collection.Jun 21, 2026 · 3 min read