This is a S&W 610 6 1/2" 10mm with wood grips I bought last week at the local gunshow. It is unfired with box and papers. The only reason it's still unfired is there wasn't any 10mm ammo at the show. I want to be it's first.
I guess they only made 5000 of this model with 5"+6 1/2" barrels and wood grips, then made the 4" with Hogues. I think the wood is pretty.