I've had this old S&W Model 34-1 for many years and have a few questions concerning the 3 Ts...the revolver is in really nice condition, has the target grips, trigger, and I'm pretty sure the hammer too...is this common on a Model 34..? I didn't pay it much attention until a buyer of another gun asked me about selling the grips...I've seen the 3 Ts on other models but I'm not sure how common they are on the j-frames...