I love old tools! None of mine are bike specific though. I have an old Snap-on 1/2 drive ratchet thats been with me so long that Ive forgotten where I got it. One day it gave up the ghost while I was fighting a particularly stubborn bolt. Later that week the Snap-on dealer popped by the shop so I inquired about having it fixed.
" Whoa! Thats an old one." He says.
He then takes me into the truck and shows me a chart of dates codes.
"This is from 1952. You know, you're supposed to be the original purchaser to get warranty, but what the hell."
He digs in a drawer and not only does he have a rebuild kit for it but it was entirely free.