I got it from a highschool buddy in the late seventies, promptly lost it on my Dad's 1.5 acre treasure trove of wrecked cars from my brothers and I. I actually found it behind the chicken house in a scrap aluminum barrel this summer. I believe this to be extremely rare as e-bay has nothing like it. Most of the web searches show some info about when they started hopping up the stovebolt in the fifties.

You may want to Google search it,also go on E-Bay and see if there are any like yours up for bid. I am sure it is worth some big $$$,so don't give it away.