I don't have anything specific on the L. Moore, however from what you describe it is probably what is commonly termed a "Hardware Gun" (Guns made by Major Mfg's of firearms, for Hardware Stores in the late 1800 & 1900's, , even individuals, with the store or individuals name on them. Some compainies provided this through import, haveing the guns made in Europe, and distributed here in the U.S. Crescent was a major contributor in these efforts. Although L. Moore is not specifically listed with Crescent, I am assuming that this gun is in that catagory, I just don't have who made it. Here is the Crescent story.
CRESCENT ARMS
This Company mfg’d good quality, inexpensive side by side and single Bbl shotguns and was founded in 1883. They were bought by the H&D Folsom Arms Company of New York, importers and distributors of firearms and sporting goods.
After the purchase of Crescent, the Folsom Company was able to offer a complete range of shotguns, imported English French, Belgium and American made Crescents. By the turn of the century Crescent Arms produced huge quantities of “Hardware Guns” it produced guns under direct contract to distributors, mail order housed and hardware distributors with any brand name the customer requested. Crescent also produced guns for its parent company, as Folsom house brands that were sold to customers that did not want their own brand name.
By the lat 1890's Crescent was producing basically five grade of dbl bbl shotguns offering a model for most tastes. The Crescent /Folsom Arms Company continued this type of business until 1930 when it merged with Davis Warner Arms Corp and became the Crescent-Davis Arms Corp. In 1932 it assets and machinery were bought by Stevens Arms Company, a victim of changing tastes and the depression
HJN