I have an orphan pair of hard rubber grips that came on my 1957 .45 I got around 1987. They aren't numbered to the gun but I just put them on again for the hell of it and they fit perfect. Then I realized I have a gun now as close as I'll ever get to Frank Hamer's "Old Lucky" .45. Mine was nickeled over bare metal when I had it engraved. His was silver plated but it's so worn I always thought it was blued.