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Original collector guides from The Diggin Dave, ordered newest first.

The Diggin Dave · U.S. Coin Research

Know What Your Coins Are Worth

Look up what any U.S. coin is worth, spot the mint errors and key dates that make a coin valuable, and decide whether professional grading pays off — every profile is built from researched mintages and recognised varieties, with verified value ranges published wherever research supports them, and every tool is free to open.

  • 152Researched coin profiles
  • 9Free collector tools
  • Au · AgGold & silver Market Snapshot

152 Researched coin profiles9 Free collector toolsGold & silver Market Snapshot

Obverse of a real 1909-S VDB Lincoln cent
1909-S VDB Lincoln cent

New Here? · Start Collecting

Start Coin Collecting — It Begins With Your Change

Every great collection starts the same way: somebody looked twice at an ordinary coin. The Diggin Dave exists for that second look. We help everyday people recognize the key dates, mint errors and silver classics passing through their pockets — and understand what those coins are genuinely worth to collectors.

You do not need a big budget or a dealer on speed dial. You need three habits:

  1. Check every coin twice. Dates, mint marks and doubling hide in plain sight — the 1943 copper penny was spent as pocket change for years.
  2. Learn the key dates. A 1916-D dime and a 1916 dime look nearly identical, but one is a $3,500+ coin and the other is pocket money.
  3. Grade before you spend. Collector value lives in condition, so know your grade before paying for certification — or for a coin.
1878-CC Morgan silver dollar, a classic first coin for new collectors
1878-CC Morgan dollar — a classic first key coin
Pillar 01 · Coins

Browse the Coins

Search and browse all 152 researched U.S. coin profiles — mintages, varieties, and verified grade-by-grade collector values.

Open the Coin Database →
Pillar 02 · History

The Stories Behind the Coins

Every great coin has a story — the doubled die that escaped the Mint, the double eagle that was never supposed to survive. Read the histories behind America's most famous coins.

Explore Coin History →
Pillar 03 · Auction Records

Recorded Auction Results

Real public auction results for top-certified examples of famous issues, gathered in one place.

See Auction Records →
Market SnapshotGold & silver spot prices
Gold · XAU$4,123.70 / oz
Silver · XAG$57.53 / oz
Updated 21 Oct 2026, 18:26 UTC
Full Market Snapshot →

Browse by Denomination

Six families of American coinage — pick one and meet its keys, rarities and record coins.

All coins →
1909-S VDB Lincoln cent

Cents

The series where legends hide — the 1909-S VDB, the 1955 doubled die, and the 1943 copper cent that sold for $1.7 million.

23 profiles in the guide
1916-D Mercury dime

Dimes

One letter decides everything: a 1916 dime is pocket change, but the 1916-D — just 264,000 struck — is the $3,500+ key of the Mercury series.

19 profiles in the guide
1932-D Washington quarter

Quarters

Silver Washington keys from the first year, 1932-D and 1932-S — plus the 1916 Standing Liberty quarter, holder of a $207,400 auction record.

19 profiles in the guide
1964 Kennedy half dollar

Half Dollars

Walking Liberty keys, Franklin rarities and the last 90% silver halves — every 1964 Kennedy half carries $25+ in collector value.

25 profiles in the guide
1878-CC Morgan silver dollar

Silver Dollars

Morgan and Peace dollars, the great American cartwheels — the 1889-CC runs $692+ in Good and up to $150,000+ in MS-65.

28 profiles in the guide
Classic U.S. gold coin

Gold

Pre-1933 U.S. gold, from gold dollars to double eagles — and the 1933 double eagle, the most famous coin in the world, sold at auction for $18.9 million.

24 profiles in the guide

Price Guide

Collector value ranges for the most researched coins on the site, by grade tier — drawn from the same verified data behind every coin profile.

View Full Price Guide →
CoinG-4F-12XF-40AU-50MS-60MS-65
$110–$130$175–$205$450–$500—$1,100–$1,350$17,000–$21,000
—$3,800–$5,000————
——$1,187–$1,345———
—$1,244–$1,523————
$225–$350$320–$550$550–$739—$1,000–$1,095$5,500–$6,000
$430–$559$600–$725$895–$1,500$1,100–$2,850$2,250–$3,250$30,000–$35,000
——$258–$345———
$50–$170$210–$300$190–$280$230–$360——
$99–$160$379–$476$1,820–$2,684$3,600–$4,392—$17,400–$26,000
$3,250–$4,680$7,600–$10,000$9,000–$11,000$11,000–$14,640$17,000–$20,000$39,040–$41,480

Ranges are collector market estimates from each coin's researched profile; a dash means that grade tier is not yet verified for that issue. Select any coin to open its full profile — mintage, history, varieties, and all six tiers.

Values & mintages reviewed October 21, 2026

Join 57,000+ Collectors

The Diggin Dave runs one of Facebook's busiest rare-coin communities — 57,000+ members trading finds, error hunts and "what is this worth?" checks every day, with new videos on YouTube and Instagram daily. Bring a coin, ask the group, learn the hunt.

Join the Community YouTube — @thediggindave88 Instagram — @thediggindave Facebook group — 57,000+ members

Latest Articles

New collector research, coin stories, and value guides — the most recently updated first.

1944 steel penny value — rare silver-gray 1944 steel wheat penny obverseError coins · Oct 22, 20261944 Steel Penny Value: How Much Is a 1944 Steel Penny Worth? (Up to $408,000+)A genuine 1944 steel penny is worth $25,000+ in any condition and up to $408,000+ in top grade — fewer than 40 exist. Run the magnet and weight tests to check yours.Read the article →

Legendary Coins, Real Values

Famous U.S. coins collectors hunt for — tap any coin to open its full researched profile.

Key Dates Worth Hunting

The scarcest dates in seven classic series, with mintages and starting collector values from the guide. Select any row to run it through the Key Date Checker.

Key Date Checker →

Lincoln Cent

Indian Head Cent

Buffalo Nickel

Mercury Dime

Washington Quarter

Walking Liberty Half

Morgan Dollar

Coin Value and Research Tools

We offer a full suite of free research tools for U.S. coin collectors — value lookups, error identification, key-date checks, live metals tracking, and an honest grading advisor — all built on 152 researched coin profiles. These resources will give you confidence in your collecting journey, whether you just found your first wheat cent or you are weighing a major grading submission.

Front of a 1916-D Mercury dime listed on the Marketplace

Marketplace New

Verified U.S. coins from real collectors, photographed front and back so you can judge them yourself. Premium members can list their own coins and reach thousands of serious buyers.

Obverse of a real 1909-S VDB Lincoln cent

Coin Value Checker

Look up collector value ranges for researched U.S. issues by date, mint mark, and variety, with filters to narrow the list. The first stop for anyone who has just found a coin and wants to know what it could be worth.

A professionally graded coin sealed in a certified holder

Grade-or-Not Popular

Scan photos of your coin, see the condition findings the scan detects, and see whether professional grading pays off — including the break-even grade — before you spend $30–50. Built for sellers weighing a submission.

Close-up of a 1955 doubled die Lincoln cent showing bold doubling on the date and LIBERTY

Error Coin Identifier

Scan photos of your coin and the identifier detects doubling, clips, off-center strikes, and die cracks itself — no questions — and shows what the error adds. For finders who suspect their coin is different from the rest.

An archival coin reference book with a loupe and cotton gloves

Key Date Checker

Scan a photo of your coin — the checker reads the date and mint mark itself and instantly shows whether it is a KEY DATE, a semi-key, or a common issue. The fastest first check for pocket change, rolls, and inherited collections.

Real 1878-CC Morgan dollar showing the Morgan design

Coin Database

Browse all 152 researched U.S. coin profiles — mintages, histories, notable varieties, series keys, and grade-tier value tables where research has verified them. The reference library that powers every other tool on this site.

A gloved collector inspecting a coin beneath a loupe

Articles & Guides

In-depth, researched guides on famous errors, key dates, grading decisions, and safe coin care — written for collectors, not algorithms. Start with the 1955 doubled die and the key-date guide.

Obverse of a real 1916-D Mercury dime

Trending Coins

See which coins collectors are researching right now, with the value ranges everyone is checking first. A quick way to spot what the market is excited about before you dig into your own coins.

Real 1932-D Washington quarter showing the Washington design

Market Snapshot

Gold and silver reference prices from the latest verified snapshot, with trend charts for both metals. Essential context before you value any silver or pre-1933 gold coin.

Front of a 1909 VDB Lincoln cent from a Marketplace listing

Collection Tracker

Add coins as you research them and watch your collection's estimated total grow, entry by entry. A simple way to keep a record of a growing collection, visit by visit.

A 1943 steel Lincoln cent beside wartime coinage

Collector Tools

Magnifiers, microscopes, scales, and albums — compare the inspection gear that matters and build your own downloadable checklist. For collectors setting up a proper examination kit.

Speak Like a Collector

Six terms that decide what a coin is worth — in plain language.

Key Date

The scarcest, most valuable date in a series — usually the lowest mintage of its mint. The 1916-D dime (264,000 struck) is the key to the Mercury series; its common-date brothers trade near silver value.

Mint Mark

The tiny letter showing where a coin was struck: S for San Francisco, D for Denver, CC for Carson City, W for West Point — and no letter at all usually means Philadelphia. One letter can multiply a coin's value a hundred times over.

Grade

A coin's condition on the Sheldon scale, from worn Good-4 up to flawless Mint State. The guide prices six grades per coin because condition is where the money is — a 1916 Standing Liberty quarter runs $3,250+ in Good and $39,040+ in MS-65.

Mintage

How many pieces the Mint struck of one date and mint mark, taken from U.S. Mint records. Low mintage plus high demand is the basic recipe for a valuable coin — and why every profile in the guide prints the figure.

Mint Error

A mistake made at the Mint itself: a doubled die, a wrong metal, a strike off-centre. Errors differ from damage — a coin harmed after leaving the Mint loses value, while a genuine mint error can gain it dramatically.

Doubled Die

Doubling stamped into the die itself, then transferred to every coin it struck. The 1955 Lincoln cent is the legend — date and lettering doubled hard enough to see unaided, worth $1,244–$1,523 in Fine alone.

Questions Collectors Ask Us

The same questions land in our community every day. Straight answers here — and the Live Chat (bottom right) answers these and any coin question from the guide, any hour.

About & how values work →

How much is my old coin worth?

Three things decide it: the date, the mint mark, and the condition. Find your coin in the Price Guide and read across the grade row — the same coin can be worth face value worn smooth and thousands in mint state. The Coin Value Checker does the lookup in seconds.

Where do the values on this site come from?

They are estimated collector values for problem-free coins, compiled from recent auction results, dealer price lists and collector-market demand, then cross-checked before publishing. The guide was last reviewed on October 21, 2026 — and every coin page prints its review date, so you always know how fresh a number is.

I found a 1943 penny — is it the valuable one?

Almost certainly it is the common steel cent. The legend is the bronze version — fewer than 30 are known. Two tests take ten seconds: a magnet (bronze ignores it, steel sticks) and a scale (bronze ≈ 3.11 g, steel ≈ 2.7 g). Pass both and stop handling it — get it authenticated. The full story is in our 1943 guide.

Should I get my coin professionally graded?

Only when the value jump beats the fee. Grading pays when a coin's price climbs steeply between grades — and wastes money on common or problem coins. Grade-or-Not runs the real numbers for your coin: scan a photo, read the findings, and see the fee versus the value gain before you spend anything.

How do I sell a coin on the Marketplace?

Selling is part of the membership — one plan at $7.99/mo (or $79/year) unlocks Marketplace selling, full Grade-or-Not verdicts, a verified seller badge and priority expert review. Browsing listings and every tool on this site stay free. See the membership →

Are the tools really free?

Yes — the Value Checker, Grade-or-Not, Error Identifier and Key Date Checker are all free and need no sign-up. Membership adds the full Grade-or-Not verdicts and Marketplace selling on top; nothing here is locked behind it.

Marketplace Seller Subscription — $7.99/month

Sell on the Marketplace + full Grade-or-Not access + a verified seller badge + priority listing review. Or go yearly: $79/year — two months free.

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