Most common coin.

I am new to collecting coins. I would like to know what the most common coin and the rarest coin in the world is currently that is still in circulation. Also, I would like to know what year the most common coin was minted with the most copies and the what year the rarest coin was minted with the least copies. Thank you for any information.

Hello,
The most common coin is I think the Lincoln Memorial cent of the United States ; year 1982.

I have no clue about the less common coin still in circulation but it's probably a commemorative coin minted in a micronation.

Like Cyncos said I think it's probably a common date circulating American coin.

It's very hard to say exactly which coin is the most "common" and even if you mean by mintage you have to factor in availability and circulation status.

This is most likely the most uncommon coin, and the most expensive I would think
https://en.numista.com/catalogue/pieces23218.html

It is outside of Budget at the moment

In hind sight, this is even 6 time less common that the previous.

https://en.numista.com/catalogue/pieces26282.html

Hope to get it as a birthday gift next year.

引用する: "Pcoetzee5"​In hind sight, this is even 6 time less common that the previous.
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​https://en.numista.com/catalogue/pieces26282.html
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​Hope to get it as a birthday gift next year.

​A Numista member claims to own that coin....

'still in circulation' is an interesting qualification, because each of us has been surprised on occasion, to receive a coin in circulation that has some numismatic value, so heaven only knows what is still circulating, certainly some really rare and valuable pieces remain to be culled from change!

I think you are asking about the rarest of legal tender coins, that commonly circulate, as distinct from the novelty and commemorative coins made for museums and collectors only, so amusing as those 1 tonne gold coins are, no one will ever find one in the toe of her Christmas stocking!

In the case of the USA to consider one example, most coins, like the quarter dollar for instance, have been the same size and shape for centuries, so you could look down one day to find you are holding a 1866 "no motto" seated liberty quarter. Only one example of this type is known to exist! it is supposed to have been a special unique pattern test, but who knows, maybe there is another floating around!
In second place of rarity for US quarter dollars is the 1873 CC "no arrows" type, six of these are known to survive, of an original mintage of a mere 4000 pieces.
there are doubtless many other examples around the world of unique remaining coins of common circulating types.

I think that perhaps the most likely scarce coin to be found in circulation is an error coin. A small number of US coins with the obverse of George Washington quarter and the reverse of the Sacagewea dollar have been found in circulation. These have been in the news lately; I do not know how recently they were discovered.

The closest I have come to such a "circulation" find is a Central African Empire 100 francs 1978, which I bought at a currency exchange house in Houston. Its cost was its currency exchange value that day. At that time, it was listed as "Reported - Not Confirmed" in Krause.