50 count tin of Colt 31 caliber centerfire revolver ammunition. Orange label with black print on the lid (see image) in part reads "ECONOMIC METALLIC CENTER FIRE CARTRIDGES" and "COLT NEW/PATENT REVOLVER/POCKET SIZE" and is marked with Colt's London address.

Very good. The lid label is cover with plastic for protection and the box has a dark patina. All 50 cartridges are present and appear as expected for ammunition of this age with dark aged brass casings.