This is an antique black powder frame Colt Single Action Army Revolver that letters in .45 Eley Short (.450 Boxer), a desirable caliber that has bemused Colt collectors for decades. In "The Official Record of the Colt Single Action Army Revolver 1872-1895" on page 46 the authors write, “An interesting fact became evident when comparing listings in the Colt ledgers with copies of the actual invoices found in the Connecticut State Library. The designation ‘Eley’ or ‘Boxer’ was used interchangeably. Revolvers listed in .45 Eley in the record ledger may be listed on the shipping invoice as .45 Boxer and vice versa.” The accompanying factory letter lists this antique SAA as chambered in .45 Eley with nickel plating and barrel length and type of stocks not listed as well as with a "special notation" listing "short barrel." The revolver has a 5 1/2 inch barrel with the one-line Colt London address on top ("COLT' PT.F.A. MFG. Co. HARTFORD CT. U.S.A. DEPOT 14 PALL MALL LONDON") as is correct on lengths of 5 1/2 inches or more. The letter confirms the revolver was shipped to the Colt London Agency, London, England, on March 17, 1879. This was a 20 unit shipment. In "The Official Record of the Colt Single Action Army Revolver 1872-1895" the authors accounted for a total of 3,385 Peacemakers in .45 Eley Short (.450 Boxer) falling in the 1-164100 serial number range and out of the 3,385 units only 264 had a nickel finish and 5 1/2 inch barrel. The left side of the frame has the three-line patent dates marking. The left side of the trigger guard is marked "45 CAL/B." London proofs appear on the barrel and behind each cylinder flute. The partitioned oak case features a Colt London Agency paper label on the interior of the lid and contains a cartridge box holding sixteen .45 Eley rounds, "L" shipped tool, case key, and an oiler. Provenance: The Norm Vegely Collection