"Austin," as I understand your question, it asks if a foreign maker manufacturing or finishing a gun solely intended for its domestic market would be required to stamp the domestic gun with the name of the country of origin, in accordance with the 1890 McKinley Tariff Act requiring the stamping of the country of origin on imported products coming into the United States from abroad. If that is your question, then the answer is "no," should the product not have been imported into the United States.
However, if the original intention of the foreign maker was not to export his productions to the United States yet he did in fact do so, then, "yes," the country of origin stamp would have needed to be applied in compliance with the legal requirements of the day for lawful importation. It depends on what eventuates and necessitates the setting aside of initial intentions as the basis for the determination.
With respect to the Lindner-produced or finished Prussian Charles Daly-branded gun, it was specifically intended for the American sportsman, as specified and marketed by New York importers Schoverling, Daly & Gales. In the second half of the 19th century, American tastes in a game or hunting gun were more British than Germanic or European. Thus Prussian-Daly guns are purposefully British in appearance, slender though weightier, and certainly the equal of competing British productions in terms of quality and perfection of design and execution. Exported guns meant for the United States were stamped to comply with the tariff laws and regulations in effect at the time.
Regards,
Edwardian
