Walker is a massive revolver. Weight 4 lbs., 9 oz. and has a 9" part-round/part-octagonal barrel. Cylinder holds 6-shots and chambered for .44-caliber percussion. There were 1,000 Walker Colts manufactured in 1847 and nearly all of them saw extremely hard use. Originally this model had a roll-engraved cylinder, military inspection marks and barrel stamping that read "Address Saml. Colt-New York City". Practically all examples noted have had these markings worn or rusted beyond recognition. Because the Walker is perhaps the most desirable and sought-after Colt from a collector's standpoint and because of the extremely high value of a Walker in any condition, qualified appraisal is definitely recommended. These revolvers were serial numbered A, B, C, D Company 1-220 and E Company 1-120. An Excellent example was auctioned by James D. Julia in 2008 for $920,000. A military Walker with about half of the original finish remaining sold at Rock Island Auction in 2019 for $1,035,000. The finest known civilian model in original factory case sold at Rock Island Auction in 2018 for $1,840,000.