I collect them in kind of a weird way. I love the model 19's with 2.5 inch barrels so I have a 19-2, 19-3, 19-4, 19-5, 19-7, and a 19-8. I still need to find a 19-6 here in CA. I also have model 57's in a 57 no dash, 57-1, 57-2, 57-3, 57-5, 57-6, Still need to find a 57-4.