This is Gary Carmichael's Plain Steel (after conflict with Remington over the 'Decarbonized' label) Lifter with a S
'Decarbonized' on the rib
Low resolution pic of Decarbonized Steel flats with 0 on the R and a symbol I can't ID on L - maybe the P inside a diamond?
Courtesy of Brad Bachelder 9-2010
“The diamond P remains to be an elusive mystery. What we have learned so far is a few commonalities. This mark appears on lifter and top lever guns, made around 1880. We have identified it on laminated, twist, and damascus barrels.
It generally is stamped on the right tube next to the extractor rod cut. In a few cases we have seen it on the forend hanger."
Previous Decarbonized Steel thread with some pics
https://parkerguns.org/forums/showthread.php?t=15215
More here
https://docs.google.com/document/d/1...A/edit?tab=t.0
Threaded Mode