I have a revolver I bought used whose origin is a mystery to me. Please see the enclosed image. It is a S&W Model 29-3 .44 Magnum in the N frame round butt configuration. The serial number begins with the letters “ALB” followed by four digits. It has the S&W finger grooved combat grips by Kim Ahrends, a three inch, unported, partial underlug barrel, fluted cylinder, blued finish, case hardened hammer and smooth trigger, white outline adjustable rear sight, and red ramp front sight. I was certain that it was a Lew Horton special, but I called them with the serial number and they said that it was not one of theirs. I didn't think that there were any three inch barreled Model 29s that were not custom runs for one or another of the limited edition distributors. I have not heard that S&W ever cataloged a three inch as a standard M29. Does anyone know what I have here ? Thanks very much in advance for responding.