Three I can think of: Hitchhiking through Missoula, 1978, stopped at a pawnshop to see if they had any guitars. There was a trapdoor carbine, rawhide sleeve repair at the wrist, lots of brass tacks, S?N between two known 7th Cavalry Greasy Grass carbines. $350. I didn't think I would get many rides carrying that .. never know, though. I did buy a steel-strung guitar for $100. It was pretty good, once I worked down the action.
Ron Paterson's gun shop, Albuquerque. Gorgeous, fully engraved Mauser sporter, 8x57, mannlicher stock. That was before I had any experience with that caliber.
Ron Peterson's again: beat-up 7x57 Mauser infantry rifle, 29" barrel and military sights. handguard and stock metal gone, fore-end of stock lopped off. No pitting, no bluing either. Matching numbers. What it had was a crest: U.S. Army eagle, shield and arrows. $195.00 as I recall. Might have been one of the contenders that got tested as a replacement for the Krag?
There were a few others .. but these stand out in my mind.
jn