What is the age and value of an American Gun Co 2 barrel 12 gauge external Hammer?

The American Gun Co. was active from the late 19th century until the early 20th century, with many of its double-barrel shotguns produced in the early 1900s. The age of a specific model can typically range from around 1890 to 1930. The value of an American Gun Co. 2 barrel 12 gauge external hammer shotgun varies significantly based on its condition, rarity, and specific model, generally ranging from $200 to $1,200 or more. For an accurate appraisal, it's best to consult a firearms expert or appraiser.