I have had 5 stainless airweights all made since 2003. 637's, 642's, and
638's. They ALL peeled. My wife and I still have and use the two 637's.
You just have to keep an eye out for corosion. I keep a coat of wax on
ours. This is an issue that S&W just refuses to admit that it IS an issue.

I hear and read comments that say " I carry mine every day for 10 years
and no peeling" Trust me if you have strong fingernails you can peel the
coating off of your stainless airweight.Thats just the way it is. I love my 637 but I would not buy anotherone because of the finish.