a neat accessory, anyone every seen one? does everyone know what it is? thought it is cool.
Accessorie wishbone cap
Period safety accessory. Replaces the wishbone cup - it's supposed to catch the wishbone, should it ever be so worn that it tends to slip out of the pan socket. Still need to wire the fastening studs together to prevent them from turning, though.
Les Scubert reproduces them:
http://www.mtfca.com/cgi-bin/discus/show.cgi?tpc=257047&post=408793