100-375 USD
If you mean a Sturm Ruger, about 300 USD
ABOUT $200-$300, depending on condition, and WHICH version of the Blackhawk.
200 or so
100-1000 USD or more depending on specifics
About $600.00
Ruger's website has extensive sn data.
100-350 USD or so
$100-$300
100-1000 USD depending on EXACTLY (OMBH, NMBH, Security Six, Redhawk, etc.) what you have and its condition.
Call Ruger and they will tell you. SN info is also on their web site if you can access it.
Its a pistol. More specifically a 6-shot, single-action revolver, made by Sturm Ruger and Company.
100-300 USD depending on condition.