I just got one myself. I honestly didn't know it was a 66 no dash, I just bought it because I wanted a 357 mag revolver. $300. Ended up paying the guy 700 total for a 17-8, that 66 and a ruger mkIII hunter in stainless. I can't wait to shoot the 66.
JohnW7787, that appears to be a clean example, at a bargain price. I bought my 66 in early '74 at a price, considering inflation, much higher than you paid. I carried mine for years, wore it out with lots of Magnum ammo, and had S&W overhaul it many years ago. Fine little revolvers IMHO.