Damn, I will be out of the country so I sure hope some of you guys can go. They should have at least 5 Corsairs, the 4 on the poster plus Jim Cavanaugh's that he keeps out at the flight museum.
Warbirds Over Addison 2015
in most WWII pictures and videos, F4U-1A/C/D corsair seems like didn't have the default fixed reflector for mk 8 gunsight. only few case founded for have it.
as i see, commonly,
case of F4U-1A, square type additonal reflector fitted at upperside of front canopy.
case of F4U-1D or -4, just...