hi jeff,
you're looking at 1600 - 2000 at a minimum. i've found a couple in 38 cfw but none as old as yours. you're probly right about shooting it. it'ld probly work well, you should try and find some ammo for it just to make a complete set. he may have got it in new mexico. the 38 cfw was a good mule deer caliber. if your going to have it insured the agent should know someone who could do a profession appraisel. check out this site about the 92. for a rifle of the 92's legacy you've got one made in the second year of production.
http://www.shootmagazine.com/articles/firearms/
winchester_m92.htm
JMHO
Kim