Regret selling or trading a LONG time ago a S&W 66 snub, a Model 19-1, and a Colt Python 6 inch nickel...what I could get for those now. But being older and wiser I have made money on many others and keep what I really want. I also regret not buying every M1 carbine and Garand I could lay my hands on back in the day...but back in the day I was poor