Originally Posted by murphydog

It should have the instruction sheet, a warranty card, and a little plastic bag with a cleaning rod, a brass brush, a cotton swab, and a screwdriver (or "sight adjustment tool"). I don't think there was anything else; later guns would have a brochure for ammo, or holsters. You are correct about the pinned reference, this feature stopped in about 1982.

The model 66 started production in 1970. Which one is best is a whole separate topic. Many prefer the older, pinned versions, but functionally there is little difference between them and a newer one. Many 66s (and 19s, for that matter) were LE guns and are worn cosmetically and sometimes mechanically also. A nice 4" 66 would be in the $450-500 range and perhaps a little easier to find than a NIB 19-2; less than $500 for the latter gun is a pretty good price.