Did we ever establish exactly which 'pin' the original poster
was asking about????
Gus has pretty much posted great pictures of all the 'pins'
that one of these would have.
The round pin that is at the top leg of the angle is pretty
easy to figure out:
http://www.pbase.com/dennygraham/image/159630894/large If.....you're shooting for originality, you could make the Saddle retainer cotter pin:
http://www.pbase.com/dennygraham/image/159630893/largeIf you are missing the hook, that to can be fabricated easily:
http://www.pbase.com/dennygraham/image/159630923/largehttp://www.pbase.com/dennygraham/image/121819654/largedg