This Man's Navy - 1945 was released on:

USA: 4 January 1945

Sweden: 24 September 1945

Portugal: 29 April 1947

Finland: 16 May 1947

US Coins issued before 1945 were comprised of 90% silver (penny excluded), and have a much higher values than those issued 1945 or after (in general). in 1942-1945, many pennies issued were made of steel (as copper was needed for the war). These war pennies also have a high value due to their rarity.

Wildfire - 1945 was released on:

USA: 18 July 1945

Sweden: 17 January 1947

Mexicana - 1945 was released on:

USA: 15 November 1945

Spain: 22 March 1947

The UN officially came into existence on October 24 1945, not during 1947.