Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
George V Twenty-Five Cents (silver)
Canada's silver twenty-five-cent coin struck under King George V, a series notable for its famous 1921 key date and a rare 1936 emergency dot variety.
Canadian
Massachusetts Oak Tree Shilling
The second design in Massachusetts Bay's colonial tree-coin series, showing an oak tree, more available than the earlier Willow Tree type but still a scarce early American colonial rarity.
United States
1885 Trade Dollar
One of the rarest official United States coins, a proof-only issue struck years after the Trade dollar series had officially ended, with only a handful of examples known.
United States
Chinese Dragon Dollar
A coiled dragon dominates the reverse of these late Qing Dynasty silver dollars, struck by numerous Chinese provincial mints as China modernized its coinage using Western minting technology.
Asian
1875-S Twenty-Cent Piece
The most commonly encountered date in the short-lived US twenty-cent piece series, struck in large numbers at San Francisco in the coin's debut year.
United States
1880 Shield Nickel
A major key date of the Shield Nickel series with an extremely low business-strike mintage, making genuine circulated examples much scarcer than the coin's proofs.
United States
Cuba 4 Pesos Gold Jose Marti
A small gold denomination from Cuba's early republican-era gold coinage, part of a 1915–1916 series (1 through 20 pesos) struck to circulate on par with US gold currency.
Latin American
Massachusetts Willow Tree Shilling
The rarest of Massachusetts Bay's tree-series colonial shillings, struck in secret defiance of English law and all frozen with the date 1652 regardless of actual striking year.
United States
2004-D Wisconsin State Quarter Extra Leaf
A famous 50 State Quarters error showing an extra corn leaf on the Wisconsin quarter's reverse, found in two forms known as Extra Leaf High and Extra Leaf Low.
Errors & Varieties
1921 Mercury Dime
A key date of the Mercury dime series, struck in unusually low numbers amid a post-World War I economic slowdown that reduced coinage demand nationwide.
United States
1878 Shield Nickel (Proof Only)
Another proof-only rarity in the Shield Nickel series, struck exclusively for collectors with no business-strike coinage issued for circulation that year.
United States
1842-O Small Date Seated Liberty Quarter
A famous condition and date rarity of the Seated Liberty series, struck at New Orleans from leftover small-date dies originally prepared for Philadelphia proof coinage.
United States
Panormus Siculo-Punic Tetradrachm
A silver tetradrachm struck at Panormus under Carthaginian control in Sicily, blending Greek artistic style with Punic legends, a hallmark of the distinctive Siculo-Punic coinage series.
Ancient
Ottoman Silver Akce
A tiny silver coin that served as the basic everyday currency unit of the Ottoman Empire for centuries, gradually shrinking in size and silver content as inflation took hold.
World