Posted by js on February 26, 2002 at 20:13:19:
In Reply to: Conn Serial # ID posted by Jason H. on February 26, 2002 at 19:05:08:
Without searching for some website that surely exists with this info, Conn brass instruments with a letter + five digits were made in the early-middle to late-middle 1960's. C would be early middle, I'd think.