Large wing prop costume broach?

[Stinger Gunner USMC]

I have had both of these items for several years but have never known what they were

The first is a wing, seems to be brass two piece (the prop spins)

the pin is 3" long, it is the same size as the af prop on the aaf cadet sleve patch

[Stinger Gunner USMC]

here is the reverse side

[Stinger Gunner USMC]

this is the other item that I am uncertain of.

I am sure this is an add on by the vet, it looks like its been there forever. looks like a bi-plane and says LIT II across the wing. I have never been able to figure out what that would stand for.