This Colt 1903 Pocket Hammer was shipped to the Iver Johnson Sporting Goods Company of Boston, Massachusetts on September 30th, 1921 in a 2 gun shipment. It's finished in Colt's fine brushed blue finish with factory rubber grips. This is a later version of the 1903 Hammer which features a spur hammer and the later type serrations in the slide.
The left side of the slide reads "PATENTED APR.20,1897. SEPT.9,1902 COLT'S PT.F.A. MFG. CO. HARTFORD, CT. U.S.A."