Soth Atlantic Medal - Hallmarked or not?

I have just been told that all Falklands medals (South Atlantic medal 1982 I believe) are hallmarked.

Can anyone confirm or deny this?

Incidentally wikipedia states they are a cupronickel mix so not sure why it would be, but the pedant in me wants to know.
 

FEASG

LE
No it's not, the ACSM 94 was but not the new ACSM 11. I think MC are though.
 
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