Considering the many years I've owned this revolver, I probably should get it lettered. Ser#340XXX two inch barrel, conservative 90%+ original blue finish. Checkered walnut stocks, perfect, with rampant colt medallion. Barrel marking left side "38 SPECIAL" VP in a triangle at the forward left side of trigger guard and the number "3" rear left side of trigger guard. There are no other visible markings. I believe this to be of 1927-28 manufacture, so I wonder if this is a first issue DS or PPS? Anyone care to comment?