I just found and purchased a very nice HSc early war Eagle/135. Before the purchase I checked the serial #'s and found that the slide and frame match, but the barrel has no number, it is also missing the Eagle/N proof mark on the side of the chamber. But it does have the WR inspection mark. The seller said he has had the gun for years and that the gun has had this barrel since he has owned it. I know I will never be able to find a matching numbered barrel for it, but the gun was too nice to pass up and the price was right. The gun chambers and functions flawlessly. Does anyone know where this barrel may have come from? Factory error? Original inventory replacement part? Any help would be appreciated.