The 642 (no dash) is a great looking snub. I've been fortunate enough to snag a couple with box in the last two years. Also have a 637 (no dash) and 638 (no dash) which also have the clear anodized finish. These (637 and 638) are limited production. Maybe 500 or so each (forget the exact number) from 1989. One of the 642s is in my regular carry rotation. Post a photo when it arrives. Maybe I'll do a group photo of the clear anodized snubs in the next day or two.

**EDIT: just noticed that you referred to the 642 no dash as having "no coating." I believe the alloy frame is clear anodized. It's not raw metal. I recommend against trying to polish.

Also have a few of the 442 (no dash). A couple black and a matte nickel.