My dad won a model 999 back in the sixties in a company promotion. I remember it came in a maroon colored box, he gave it to my mother who was in the market for a home defense gun. I used to "borrow" it and take it to the field with me, clean it and return it to its box. It was not twelve year old proof and I broke the single action sear so that it would only fire double action, they were not built for fanning. I can say the same for a Colt Trooper .357 I bought in the early 70's, although not through fanning but some other issue involving some very hot rounds I broke the single action sear on that one as well. Haven't managed to break a Smith and Wesson revolver...