50-175 USD
100-200
50-165 or so
RUGER PISTOLS ARE GOOD GUNS, ABOUT $600
Depends on the condition, type of barrel and sights, etc. Anywhere from $200-$500.
100-400 USD
The numbers 10-21133 are the serial number that was assigned to your Ruger Standard Mark I pistol,which was made in the year 1969.
You need to contact Ruger. You may have a prototype
Upload a photo of it to a gun forum to identify it, guns are not identified by their serial number, they are identified by their model name. For example : Ruger Charger, Ruger Mark, etc.
10-200 usd
50-200 USD
50-250 usd
50-250 usd