WTS: Colt 1851 Navy percussion cap revolver. 36 caliber, 71/2 inch octagonal barrel, manufacture date 1863. Functions and shoots. Sam! Elwell engraved on brass blackstrap. 1851 Navy Fourth model serial range 85,000-215,348. Grade 30-40%, Blue book price at this grade is $1200-$1600 range, priced for sale at $895.