Colt Diamondback, .38 Special cal. double action revolver.   Serial #D20746, mfg. 1968.  New unfired in box.  Super looking Snake Gun! 4” barrel has mint bore, ramp front sight and adjustable rear.  Barrel and frame have near 100% blue finish.  Cylinder has 99% blue with faint index marks. Colt checkered walnut target grips are like new.  Checkered polished hammer is excellent.  In original box with Colt combination screw driver tool.  Absolutely pristine! Nice investment piece.