I have a nickel plated Colt Police Positive, circa 1930s. It was my grandfathers, so it is a long term keeper. There is a crack on one of the mother of pearl grips. The crack is on the butt surface. I would like to repair it myself. Thoughts about what to use? Any epoxy to seal the crack then polish with progressive sandpapers? Thanks in advance. Wanna kill these ads? We can help!