What's The Rarest Coin You've Found In Circulation?

When I was little, I got a Dutch 1959 2,5 gulden in silver as change once. That was pretty unique, as most silver coins were already out of circulation for decades and this coin has a bigger size than its successors (33 versus 29 mm), which were regular circulation money at the time. I still have that coin.

UK coin - 1950 penny (mintage 240,000) when I was 10 years old.

UK decimal coin - 2002 Northern Ireland Commonwealth Games £2 (485,500).

Foreign coin from major country - 1983 French 5 Francs (100,000) - found in change in 1992 during a work trip to Paris.

Foreign coin from minor country - 1976 Monaco 5 Francs (14,000) received in change on vacation there in 1977!

A 1921 d dime I got from a bank in change about 1973.

Probably would have to say 1980 doubled die I found few months ago roll searching since there's only been somewhere around 500 or so of those found...probably more like 1-2000 but those are the numbers I saw(and no,it's not very valuable lol)

Likely one of the following:
1999-M 2 rubles (I think I got it myself - it might have been from my father's change)
2010-SP 10 rubles with 135 degree rotation (fun story - I put that coin aside because of the mintmark, father noticed the rotation)
1986 commemorative 1/2 sheqel (in Israel, of course, but still)

By mintage, for the record, it's probably a commemorative 50 dram (this one, I think) that I found in Armenia; mintage 60,000 (or so says Numista). But Armenia is a tiny country.

I do not recall whether the assorted Israeli 5 and 10 sheqel commemoratives I eventually got from my father's collection were found by me (in the late 1990s, when I was a kid) or by my father. (Or perhaps by my mother?) Judging by the fact that I don't remember getting them, probably the latter, but I don't have that many memories from that early anyway.

My father does collect coins, incidentally, though very slightly (he's a lot less addicted than I am, and, to the best of my knowledge, does not actually go out to buy coins).

My memory distinctly tells me that I once managed to find an 1980 dated 10 agorot; which, if true, would be a very rare coin indeed, given that the denomination in question was not actually made (in that design, at least) until several years later.
Sadly, I stupidly took that coin (along of most of the rest of my then-collection of Israeli coins, which fortunately included no commemoratives) with me to Israel in 2003 (and proceeded to spend it all there), so I could not say what it was in reality.

1909 S VDB but that was a long time ago.

A 1991 Canadian quarter.

@ just carl..


Wow, nice..

@ Joseph7420..


..I've have never found one in circulation, had to buy mine..