Ruger Old Model XR-3 Grips
1953-62 Ruger Single Six Revolver Grips
Sometimes Referred to as Old Model Vaquero
Referred to as the "Three Screw Model"
The Frames Have Screws Instead of Pins Found on Later Models
The Inside of the Frame is Marked “Alcoa” & “XR3”
Also Ruger .357 & .44 Flat Top Blackhawks