Postby Qrt.S » Wed Jul 29, 2015 1:47 am
It is hardly a fake and there is an assaying mark, no doubts about that. The 84 with St Petersburg's town crest in an oval frame is the assaying mark used 1882-1899. The maker is , however, more difficult. It could be Aleksey Nasedkin 1883-1905 but I'm not sure because the mark is unclear and could as well be seen as ДΗ (latin DN). Who that may be I don't know, sorry.