[Graham Boak]

Thanks for that - I do apologise because the author does go on to say that the TBM-3E was the AS Mk.4 and the TBM-3E2 was the AS Mk.5, so he hasn't left it quite as undefined as I implied. However, the 3E2 designation was new to me, and apparently also to others.

I do have the FAA postwar book - and also the Aeromilitaria so I can dig them out. However, clearly they would not help.