16 January 2017: Bill Gilman noted (see his comment below) that the later canopy seemed to be more bulged laterally. I had wondered about this in passing but hadn't taken a close look at it. However, it's obvious, certainly the shape of the frames between the windscreen and sliding canopy.
There were two different F2H Banshee canopies, not counting the one on the original XF2D-1 prototypes.
For some reason, after completion of F2H-1 production and not quite half of the F2H-2s, McAir elected to produce the remainder, beginning with BuNo 124940, with a slightly different canopy. The center panel of the windscreen, which had been straight sided, was now an oval with heavier framing.
I only have a McAir lines drawing for the later canopy.
The sliding canopy bow, which had had a flattened top, now had a smooth curve.