I don't know about 1976 specifically, but a lot of the circulation issues for Panama were struck in the USA, by the US Mint, I believe, and on US Mint-standard blanks (i.e., the 5 centesimos would be on a nickel planchet, the 10 centesimos on a clad dime planchet, the 25 centesimos/ quarter-Balboa on a clad quarter planchet, and so on).
I think the Royal Canadian Mint also struck some Panamanian coins and the Franklin Mint struck some of the Mint set and Proof set coinage.
Comments
I think the Royal Canadian Mint also struck some Panamanian coins and the Franklin Mint struck some of the Mint set and Proof set coinage.