About $500 to $600 each, depending on exact model. For a consecutive pair, it can add a modest amount- $50 or so.
100-1000 usd
If they are numbers off the butt, they are the sn.
Probably a Model 66
No
It's not stainless.
100-450 USD
100-1000 usd
Stainless Steel Revolver
50- 400 usd
A deadly weapon.
Stainless Steel Chief's Special
100-475 USD