Those are the same grips that came originally on my 1992 Colt SAA. They fit perfect, of course being made for the gun, but they were dull and I hate gold meds. But your gun is so nice that the grips are only a reason to find better ones for it based on your particular tastes. I have a pair of 1950s or 60s Colt standard hard rubber grips that fit my three 1950s guns perfectly. So they were very uniform in that era that I consider the best period for post war SAAs. There's a good chance that hard rubber grips fro that era you might find for sale will fit it, or very close. Another reason your gun is so cool. It came out the same year I did. Here's my '57 .45.