Representing Ohio Brass/Akron HP and New Lexington, M-2636, M-2637 and on the top far left, the uncommon M-2643 which doesn't have the flared collar of the 2636 and a bottom shell like the M-2635. Hadn't been a post here for over a month so I thought I'd break the streak. The smaller units are some OB and Thomas alums. I intentionally didn't dust them first since a little dust cuts down on the flash glare. That's my story and I'm sticking to it.