That I don't know, haven't received her yet found and bought via GB should be here by weeks end. How are his grips marked? I saw the posts on his grips on here and told myself I'd get a set of them when I found the right gun to put them on. Wasn't really looking for a nickel, but the price went lower than I had expected and reading every post about the 58's I had to have one. Love the fixed sight pre locks. Own a 4" model 13 and well carried 581. A blue 58 and then a 520 are next on the list...sn on the nickel is N15357X, if I'm reading the post on N frame serial numbers it was produced somewhere 73-74? I'll post more pics when I get it.