[Mr. 16 gauge]

I get a little confused when I go "By the numbers"

Did S&W make a nickle plated version of the M19, and if so, did it go by a different number designation, or was it just known as the "nickle plated S&W M19"?

Also, is there a good S&W website that has all the dope on the various model numbers?

Thanks in advance........