Great to have the RCM foreign coin page. For the Iran coins, on this link:
https://www.coinsandcanada.com/coins-ar ... int&id=750
The Fifty Rials silver coin has the diameter incorrectly noted as 15mm.
The correct diameter is 30mm.
(The 50 Rials has the exact same diameter as the 1000 Rial gold coin.)
Thanks, Ron