Hi. I made a post in the catalogue forum asking whether there is 1 version (5th portrait) of the Battle of Britain 50p or 2 versions (4th and 5th portraits) https://en.numista.com/forum/topic54434.html
I've done a swap with a collector that had the 4th portrait version listed for swap. I've just received the coins and the 50p is a 5th portrait coin. I therefore more strongly suspect that the 4th portrait version of the coin does not exist and to support this the Royal Mint mintage information only lists the 5th portrait coin.
4th portrait: https://en.numista.com/catalogue/pieces68029.html
5th portrait: https://en.numista.com/catalogue/pieces85177.html








