That’s a fine looking piece of headgear, David.
Man, Rick. I’m ebarrased to say I don’t know for sure. Sent me off on a search through old knife threads.
Here’s something cool I learned~
The govt basically drove Schrade out of using bone scales, with increasing regulations, licensing, procurement documentation, and tighter restrictions on using and disposing of the dyes.
So Schrade went to Rogers for their bone, but the sudden and huge increase in orders made Rogers fall behind. To help, Schrade sent Rogers some of their drying vats.
One of those vats caught on fire, and caused an explosion that destroyed the Rogers Ct factory. And that was when they started using delrin.
I’d guess both of mine come from that early delrin era, maybe early ‘60s?
But now that you’ve got me curious, I’ll keep looking.