What strikes me more is the presentation packing, showing Spitfire VBs of No.124 Squadron, which was not in existence in 1940, and in the later ocean grey/dark green rather than the dark earth/dark green of the Battle of Britain period.
Any Spitfire will do, I guess. Obviously the Royal Mint use the same researchers as most media outlets. Still, I suppose it could have been a
PR.XIX or a Seafire...