Well I know it was made in 1975(AA), proofed in Italy and there is the end of the trail. It is stamped PR or RP w/SN on butt of revolver.I've checked all my reference material and nothing. Just found the 44 caliber remmie w/chrome frame, blued barrel,w/light rust found in the box of shotgun shells I bought at a yard sale. Any info at all would be helpful. Thanks all..