The .32-20 Hand Ejector Thread
Post#66 from the 32-20 hand ejector thread is the closest SN I've found to mine so far. It has the MERK, it's blue. The stocks match mine and has the small S&W logo on the left side of the grip frame as does mine. This one is 996XX, mine is 977XX. Just thought I'd put this out there.
Firebird V8, I'm adding the pic you posted here.