The Tenpō Tsūhō, a Japanese coin from the 19th-century.
Although the vast majority of coins are round, coins are made in a variety of other shapes, including squares, diamonds, hexagons, heptagons, octagons, decagons, and dodecagons. They have also been struck with scalloped (wavy) edges, and with holes in the middle. Coins in the shape of polygons often have rounded edges or are Reuleaux polygons.
This article focuses mainly on circulating coins; a number of non-circulating commemorative coins have been made in special shapes, including guitars, pyramids, and maps.[1] There is a list with more unusual shapes of non-circulating commemorative coins at the end of this page, that all have been issued officially by various countries.
^Plautz, Jason (13 May 2013). "11 Unusually Shaped Coins". Mental Floss. Retrieved 1 July 2018.
coins have been made in special shapes, including guitars, pyramids, and maps. There is a list with more unusual shapes of non-circulating commemorative...
accurately approximated by Reuleaux polygons. They have been applied in coinageshapes. If P {\displaystyle P} is a convex polygon with an odd number of sides...
level surface. Another application of curves of constant width is for coinageshapes, where regular Reuleaux polygons are a common choice. The possibility...
The standard circulating coinage of the United Kingdom, British Crown Dependencies and British Overseas Territories is denominated in pennies and pounds...
Ancient Greek coinage and Achaemenid coinage, and further to Illyrian coinage. When Cyrus the Great (550–530 BC) came to power, coinage was unfamiliar...
Coinage of India The Coinage of India began anywhere between early 1st millennium BCE to the 6th century BCE, and consisted mainly of copper and silver...
Ancient Chinese coinage includes some of the earliest known coins. These coins, used as early as the Spring and Autumn period (770–476 BCE), took the...
Panormus, modern Palermo). The coinage that these communities produced is known as Siculo-Punic coinage. Like the coinage produced by the Greek communities...
the Persians issued their own coinage, a continuation of Lydian coinage under Persian rule is likely. Achaemenid coinage includes the official imperial...
1305) Charity on the south doors of the Florence Baptistery (c. 1336) Heart shapes can be seen on various stucco reliefs and wall panels excavated from the...
Aethelred II of England, and as the Anglo-Saxon coinage of the period changed its design every six years, the coinage of Sitric followed this pattern. Following...
Money portal Achaemenid coinage Ancient Chinese coinage Ancient Greek coinageCoinage of India Parthian coinage Sasanian coinage Neiburger and Spohn, writing...
official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar...
has a long history of different coinage types, which spans thousands of years. Italy has been influential at a coinage point of view: the medieval Florentine...
California gold coinage is a broad category of privately-issued coin-like items that were used in place of official currency in the United States territory...
same shape and size as their UK counterparts. After this, however, all new denominations or redesigned coins were of different sizes to the UK coinage. The...
200th anniversary of the Griqua coinage, the first coinage issued in South Africa. These coins are the same in size and shape as the 5 rand that was introduced...
While Shankar Goyal mentions it is unclear whether Panini was referring to coinage, other scholars conclude that Panini uses the term rūpa to mean a piece...
The earliest coinage of Asia is also the oldest coinage of the world.[citation needed] Coins were invented several times independently of each other. The...
Silver coins are one of the oldest mass-produced form of coinage. Silver has been used as a coinage metal since the times of the Greeks; their silver drachmas...
solidus was replaced in Syria and Egypt with the dinar. Initially, the new coinage contained depictions of the caliph as the spiritual leader of the Muslim...
(sīsarūpa) are mentioned. Rūpa means form or shape, example, rūpyarūpa, rūpya – wrought silver, rūpa – form. This coinage system continued more or less across...
Chinese coinage during the Spring and Autumn and Warring States periods includes some of the earliest coins produced in the world. However, they were...
Singha (r. 1821–1824). Coins were usually struck in octagonal shape, but square and round shapes coins were also issued but in limited quantity for special...
The history of Saxon coinage or Meissen-Saxon coinage comprises three major periods: the high medieval regional pfennig period (bracteate period), the...
number of siege coinages were produced, often in unusual denominations. Following the restoration of the monarchy in 1660, the coinage was reformed, with...
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