I purchased this 629-2 a few years back second hand. S/N BBNXXXX. Based solely on the model number I assume it to be 1988 manufacture. It came to me as shown with Pachmayr Compacs which I've since changed out to Grippers, no box, papers or anything else.
It is a round butt, 3 inch, no porting. White outline rear and red ramp front. Trigger is a .312 smooth combat, hammer is .400 semi-target.
I've run through SCSW and I don't find the serial number prefix. I also don't find this with a product code listed or as a variation in 629-2. It seems somewhat in line with product code 103610, which was supposed to have been used for a number of 3 inch guns.
Does anyone have any deeper knowledge that might help me pin down a bit more on this? Otherwise I guess I'll pop for a letter.