A variation of Third Model Dragoon. Only notable differences are British proof-marks and distinct #1-#700 serial number range. Other than these two features, description given for Third Model would apply. These revolvers were manufactured in Hartford, but were finished at Colt's London factory from 1853-1857. Some bear the hand-engraved barrel marking "Col. Colt London". Many English Dragoons were elaborately engraved and individual appraisal would be a must. Two hundred revolvers came back to America in 1861 to be used in the Civil War.