Need approximate value and info on parts. Stevens pocket rifle

[drslav]

My friend just aquired this stevens pocket rifle in .32 rim. Marked J Stevens CC CHICOPEE FALLS PAT 1864.
Gun is in fair shape. Barrel is frosted with distinct and fairly sharp rifling. Nickel plating worn
About 29-30 % left. Locks up with little play. Missing peep sight and trigger spring and screw. Otherwise would be in working order. Barrel is about 10". Numbers all matching except the stock is 6 digits off. Gun is XX18 and stock XX12
Any ideas on value would be appreciated. Also info on where I can get the parts missing.

 

[wr.sainsbury]

Parts may be available from Poppert's in U.S. Had a similar piece with about 90% nickel remaining and sold/part traded for 900- last year.

 

[drslav]

Thank you.