All About Pocket Knives

Just got this knife in. The tang reads (first line) "Schatt & Morgan" (second line) "Cutlery Co" (third line) "Titusville PA." From my research, there were several stamps in their early years. Any idea what time period they used this three line stamping? I'm also wondering if this knife had celluloid handles originally. I think this one is worth saving, but not sure what kind of handle to go with. Thanks for looking!

This likely won't be helpful because you are probably looking for a narrower range of years. But just in case... S&M was making knives in Titusville from 1902 to around 1930. I have a coke bottle knife with the same marking. If it had a Gowanda mark then it would be made between 1897 and 1902.