Francis Escherich shows up in the 1870 Census, living in Baltimore. He is listed as Bohemian born, circa 1840 with a wife named Barbara from New York.
He shows again in the 1880 Census living in Buffalo, New York. This time with an occupation of Gunsmith / Machinist. The wife's information is the same, as is his, so I assume he moved.

Would this have been part of a set? These type of guns were very common in Europe. Something a gentleman would carry in his coat.

Pete