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What Is The Smallest Diameter Modern Minted Coin Out There?

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chafemasterj's Avatar
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 Posted 01/26/2018  10:55 am Show Profile   Bookmark this topic Add chafemasterj to your friends list Get a Link to this Message Number of Subscribers
I've been going through some coins from around the world that my father had passed on to me. I've ran across two 15 mm coins (Norwegian Ore and a Dutch Guilder). I know I've seen some small old non-circular coins. With modern minting technology though what is the smallest coin that a country has put out there?
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nfine's Avatar
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 Posted 01/26/2018  11:25 am  Show Profile   Bookmark this reply Add nfine to your friends list Get a Link to this Reply
If you Google your question, you'll find the answer.
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bd251's Avatar
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 Posted 01/26/2018  11:33 am  Show Profile   Bookmark this reply Add bd251 to your friends list Get a Link to this Reply
In general of just for circulation? Here is a Numista search for round coins 1600-2018 10mm and smaller. The "Panama Pill" is a well known small coin at 10mm, 1.25g. https://en.numista.com/catalogue/pieces20590.html
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Crazyb0's Avatar
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 Posted 01/26/2018  1:36 pm  Show Profile   Bookmark this reply Add Crazyb0 to your friends list Get a Link to this Reply
Already a thread:

Just recently received a bag of ancient silvers, all are pint sized and less than 10mm, swear I'll lose the darn things!.

http://goccf.com/t/257235&whichpage=1
Edited by Crazyb0
01/26/2018 1:39 pm
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chafemasterj's Avatar
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 Posted 01/26/2018  1:39 pm  Show Profile   Bookmark this reply Add chafemasterj to your friends list Get a Link to this Reply
Thanks bd251. That's some good info. .and thank you for introducing me to numista.com
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chafemasterj's Avatar
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 Posted 01/26/2018  1:52 pm  Show Profile   Bookmark this reply Add chafemasterj to your friends list Get a Link to this Reply
@Crazyb0. my question was just more specific. I'm curious about modern coinage and what the smallest is. I did Google it and was having a hard time limiting my search to not include older coins.
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Finn235's Avatar
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 Posted 01/26/2018  2:01 pm  Show Profile   Bookmark this reply Add Finn235 to your friends list Get a Link to this Reply
I believe the smallest made on modern minting equipment were the Panama Pill (1904) and Travancore 1 cash coins (1901-1947), 10 and 10.5mm, respectively.

Several countries have put out tiny little precious metal fractional coins; I believe the smallest Britannia was 8mm or thereabouts.

The smallest coin in absolute terms was a fractional fanam from India, the smallest that were still die-struck are just 2mm and have an indistinct and irregular pattern on both sides.
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 Posted 01/26/2018  2:32 pm  Show Profile   Bookmark this reply Add january1may to your friends list Get a Link to this Reply
In general (including NCLT), 4 mm is the smallest I'm aware of - this type and two other Cook Islands coins (in gold and platinum) comprise the World's Smallest Coins set.
IIRC, a few ancient and medieval types might have also been made in this size or even smaller, but those do not count as "with modern minting technology".

The smallest coins still minted for circulation today (or, at least, within the last few years) appear to be the Netherlands Antilles 1 cent and the Mexico 10 centavos, both at 14 mm.

The Uruguay 1 nuevo peso 1989, at 12 mm, appears to be the smallest coin made for circulation in the last few decades; it apparently barely circulated due to its overly small size and weight, and was demonetized in 1995.

The already mentioned Panama Pill (10 mm) is, of course, the smallest circulating coin of the 20th century.

As far as I can tell from a Numista search, the smallest coin ever made for circulation with modern minting technology (or, at least, something that could pass for it) is probably this Guatemala gold 4 reales, only 9 mm in diameter.

And, of course, as already mentioned, many - many - ancient and medieval coins (up to late 19th century in some parts of India) were smaller yet; but those types weren't exactly made with modern minting technology.
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 Posted 01/26/2018  4:59 pm  Show Profile   Bookmark this reply Add chafemasterj to your friends list Get a Link to this Reply
Thank you Finn and January1may. When I was Googling I saw that some people collect only small coins. Amazing how many different ways you can make a coin collection 'your own'.
Check out my counterstamped Lincoln Cent collection:
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anthonythecoinma's Avatar
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 Posted 01/26/2018  9:35 pm  Show Profile   Bookmark this reply Add anthonythecoinma to your friends list Get a Link to this Reply
There is a puny small Chinese Imperial Provincial 5 cents. These are from many provinces, such as Kirin, Fukien, Kwangtung, etc. They are very very small. 3.6 Candareens. Ill post one shortly!
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tdziemia's Avatar
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 Posted 01/27/2018  9:24 pm  Show Profile   Bookmark this reply Add tdziemia to your friends list Get a Link to this Reply
Pretty sure the smallest modern world coin in my collection is the Turkey 1 kurus from 1960s. 14 mm.
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 Posted 01/12/2025  03:37 am  Show Profile   Bookmark this reply Add btsimonh to your friends list Get a Link to this Reply
English silver maundy 1d is 11mm... is this 'modern' minting?
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 Posted 01/12/2025  04:46 am  Show Profile   Check NumisRob's eBay Listings Bookmark this reply Add NumisRob to your friends list Get a Link to this Reply
The last issue of the Netherlands Antilles 1 cent (still being struck in 2022 according to Numista) was 14mm, as was the last Spanish 1-peseta coin before that country adopted the Euro, struck from 1989 to 2000. An older 14mm coin issued for circulation was the Ceylon quarter-cent.

A TV marketing campaign currently running in the UK is promoting a 24-carat gold 'one-eighth sovereign' commemorating Sir Winston Churchill. The advert conveniently doesn't mention that it's struck for Tristan da Cunha and has a diameter of 11mm, and costs about double the value of the bullion.
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 Posted 01/12/2025  10:17 am  Show Profile   Bookmark this reply Add january1may to your friends list Get a Link to this Reply
Since the original discussion, the Guatemala 4 reales had been reclassified as 10 mm, which ties it with the Panama Pill and the Travancore 2 chuckram - that last one probably winning the "circulating coin" title by weight (the Panama coin is much heavier).

In the meantime, "smallest NCLT" had also became a point of pride, with Cook Islands' 4 mm coins beaten first by the "Einstein" Swiss 1/4 franc (2.96 mm) in 2020, and then by the "Hum" Croatian 1 kuna (1.99 mm) in 2022, which is, as far as I can tell, the smallest coin minted so far. In a few years there will probably be something even smaller.
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