CWM, hard to say.
Facts are;
**1910 DWM's are some of the first made, so rarer
**the 108 is probably a unit marking? But we'd need to see it?
**90% is pretty nice, so if all matching and in good shape, it'd be a shame to make it a shooter. I am sure some members would trade you a shooter for it if you'd like.
Provide more info and pictures please and WELCOME!!
Ed