The Martlet II appears to have been built in two sub-variants. Some early aircraft with "A.M." serials (yes, note periods after the letters!) had British-spec catapult spools, and an extended fairing between the landing gear, as seen in the shot below.
Later aircraft with "AJ" serials seem to have dispensed with both features.
What was the cut-off point? Did all the "A.M." machines have the early features?
Another noticeable difference was the tall
Again, thanks for the info! I was not familiar with Air Arsenal North America, but now have a copy on the way.
Here is some truly trivial trivia for the Martlet II modeller. My guess is that these are early examples with "A.M." serials:
1) Yellow arrows: on most Wildcats, the small rectangular door that accesses the crank for the wing fold lock pin is hinged on its inboard side. On these machines - the very first folding F4F's - it is hinged at the rear. I would think the