Coin Encyclopedia
Search and identify coins from around the world — with country, denomination, metal, mint, history, and how to tell them apart.
New Zealand Mint Silver Kiwi
A popular silver bullion coin from the New Zealand Mint depicting the flightless kiwi bird, with a design refreshed most years since its debut.
Bullion
Japanese Nishu-kin (gold coin)
Small rectangular gold coin from Tokugawa Japan valued at two shu, or one-eighth of a ryo, part of a fractional gold denomination system unique to Edo-period currency.
Asian
Netherlands East Indies Gulden (Wilhelmina)
Dutch colonial silver gulden struck for the Netherlands East Indies bearing the portrait of Queen Wilhelmina, the standard coin of Dutch-ruled Indonesia.
Asian
1975 No S Proof Roosevelt Dime
One of the rarest and most valuable modern US coin errors: a 1975 proof dime struck without its San Francisco 'S' mintmark, with only a handful of examples known.
Errors & Varieties
1999 New Jersey State Quarter
One of the original five 1999 State Quarters, honoring New Jersey with a rendition of Washington Crossing the Delaware, launching the wildly popular 50 State Quarters Program.
United States
1970 No S Proof Roosevelt Dime
A proof Roosevelt dime struck without its 'S' mintmark, one of a series of similar San Francisco die errors found across several years in the late 1960s and 1970s.
Errors & Varieties
Australian Gold Nugget (Kangaroo)
Australia's premier gold bullion coin, originally depicting real gold nuggets before switching to an annually changing kangaroo design, struck in .9999 fine gold.
Bullion
Native American Dollar (Sacagawea Reverse Series)
A continuation of the Sacagawea dollar with an annually changing reverse honoring Native American history and culture, while keeping Sacagawea's portrait on the obverse.
United States
1946-S/D Jefferson Nickel Repunched Mintmark
A hand-punched mintmark variety on the 1946 Jefferson nickel showing remnants of a D beneath the final S, created when a die intended for one mint was repunched with another mintmark.
Errors & Varieties
1922 Canadian Nickel Five Cents
The first year Canada's five-cent coin was struck in solid nickel rather than silver, introducing the beaver reverse design that would define the coin for decades.
Canadian
Naxos Silenus Tetradrachm (Sicily)
A silver tetradrachm from the Sicilian Greek colony of Naxos, celebrated for its masterful head of Dionysos and a vividly rendered seated Silenus on the reverse.
Ancient
New Zealand Waitangi Crown (1935)
Rare 1935 New Zealand silver crown depicting the meeting between Governor Hobson and Maori chiefs, one of the most valuable coins in British Commonwealth crown collecting.
Africa & Oceania
1918/7-D Buffalo Nickel Overdate
A famous overdate error on the Buffalo Nickel where a leftover 1917 working die was hand-repunched with an 1918 date, leaving traces of the underlying 7 visible beneath the 8.
Errors & Varieties
Netherlands East Indies VOC Duit
Copper coin struck by the Dutch East India Company (VOC) for circulation in its Asian trading territories, a common relic of 18th-century colonial commerce.
Asian
Colombian 8 Reales (Nueva Granada)
The classic Spanish colonial "piece of eight" struck at the mints of Bogotá and Popayán, continuing in modified form after Colombian independence before decimal reform.
Latin American
Netherlands Rijksdaalder Gulden
The 2.5 guilder coin of the Kingdom of the Netherlands, carrying forward the historic rijksdaalder name through the monarchy era until the euro's adoption.
European
War Nickel (Silver 1942-1945 Jefferson Nickel)
A special wartime Jefferson Nickel alloy struck without nickel metal to conserve it for military use, identifiable by a large mintmark placed above Monticello's dome.
United States
Argentine Peso Moneda Nacional (Patacón)
Argentina's long-standing peso moneda nacional coinage, informally nicknamed the patacón, formed the backbone of the country's currency from the 1880s well into the twentieth century.
Latin American
Byzantine Gold Histamenon Nomisma
A distinctive concave (cup-shaped) Byzantine gold coin introduced in the 10th century as the full-weight companion to the flat tetarteron nomisma.
Ancient
1951 Nickel Commemorative Five Cents
A special Canadian five-cent coin marking the 200th anniversary of the isolation of the element nickel, struck in the metal itself to honor Canada's role as a leading nickel producer.
Commemorative
Netherlands East Indies Java Rupee
A Dutch colonial silver rupee struck specifically for the island of Java, issued to standardize local currency amid the many foreign trade coins circulating in the Dutch East Indies.
Asian
1883 With Cents Liberty Head Nickel
The corrected version of the 1883 Liberty Head Nickel with CENTS added below the wreath, issued later the same year to stop widespread gold-plating fraud tied to the earlier No Cents design.
United States
1938-D/S Buffalo Nickel Overmintmark
The famous final-year Buffalo nickel variety showing a D mintmark punched over a leftover S, created when Denver reused a die originally prepared for San Francisco.
Errors & Varieties
Netherlands 10 Gulden Gold (Wilhelmina)
The gold 10 Gulden coin featuring Queen Wilhelmina was the Netherlands' standard gold circulation and reserve coin in the early 20th century, later restruck as a recognized gold bullion piece.
European