Buckle help and a couple misc. pieces

[skateandcreate]

Hey fellow tnet'ers. Its been awhile since I've gotten out but I have a few questions as to age/use of several items, and two complete what's it's ( the small twisty and the clip shaped objects ). As always thanks for looking guys!
P.S. some of you may remember the twist thing from awhile back but I assure you i'm not being the cannonball guy