37R. Ruger – Mod. Single Six (Pre-Dash, Pre-Warning) (Flat Gate, 3-Screw) – 22 Long Rifle Cal. Single Action Revolver – w/4 5/8” Barrel w/Blade Front & Notch Rear Sights – Blued Finish w/XR3 Grip Frame – w/Factory Black Eagle Checkered Hard Rubber Grips – There Were Only Approx. 62,000 Flat-Gate Model Single Sixes Mfg. Between 1953-1957
