1 sentimo 1975

I have several coins of this type:
https://en.numista.com/catalogue/pieces2447.html
How do I distinguish the different mintmarks?

Thanks

Hi,

that's a good question, indeed!

Ole

I have not been able to find anyway to distinguish the coins from the US Mint and Llantrisant. The FM mark is on the reverse under the seal, to the left of the right star.



My coin is FM and I do not believe it is matte or proof so I have identified it as Special Uncirculated.

Will

Hi,

here is what I have documented years ago, sorry, but I had forgotten about it!



If that helps anything, I don't really know

Ole

Thanks both for the replies.
Indeed, you information is what I knew already.
It is the US and Llantrisant difference that I can not Find.
The BSP mintmark is also very clear:
https://en.numista.com/catalogue/pieces7833.html

Thanks again