Well, it's almost Danish. Technically it's German, though, from the city of Flensburg in Schleswig-Holstein, which lies just south of the Danish border and which is the center of the Danish national minority in Germany.
The Flensburg city mark here depicts a castle, taken from the city arms. The maker, C.MORUP, is Christian MÃ¶rup, who was, in fact, born in Randers, Denmark in 1815, the son of goldsmith Niels Back MÃ¶rup. He was probably trained there by his father, but he became a citizen of Flensburg in 1856 and was working there as a silversmith at least by 1858. He died in Flensburg in 1881. Two of his sons also became silversmiths: Johann Friedrich Christian MÃ¶rup (1849-1880) in Flensberg, and Christian Adolph MÃ¶rup (1873-1914) in nearby Tondern.