Your Hopkins & Allen XL model was made between 1902-1914.These were a five shot double action.there value is not much,between 55-160 dollars.
10-100 USD or so
Hopkins & Allen Arms Co. Fifty Years of Gunmaking 1867 - 1917 by Joseph T. Vorisek is about the best book on H&A.
The Hopkins and Allen XLS double action centerfire handgun was manufactured in the early 20th century, specifically between 1900 and 1910. This revolver was part of a series produced by the Hopkins and Allen Arms Company, known for their various firearms during that period. If you're looking for a specific year or model details, more precise information may be available through collectors or historical firearm references.
Try Hopkins & Allen. Depending on condition, anywhere from $25-100.
Cornell publications might have what you are looking for.
any single or double action semi-automatic pistol listed as a 40 caliber pistol...............
50-100 USD
25-100 USD or so
Inexpensive turn of the century handgun
25-75 USD
25-75 USD
10-1000 USD depending on specifics.