Postby Qrt.S » Fri Mar 16, 2012 9:24 am
This hallmark was used 1882-1899. If we assume that the master's mark is C.K it might be Sergej Fjodorovitsh Kvjatkovskij. He had a silver workshop in Podjacheskaja Uliza 5 in St Petersburg around 1892-1908. But this is only my assumption. Nonetheless, his marks match the marks on the case. No hits on G.K.