I have an older S&W .38 here. M&P/Mod 10. Trying to get an idea of its age. 2' bbl, nickel plate, no model number stamped on crane, no bilingual markings, S&W logo on right side plate, "Made in U.S.A." on frame single line, no address. Also has adjustable rear sight (for what that's worth
) Any idea of what decade it was built? Serial# 6851722###X


















































