Postby Qrt.S » Fri Apr 29, 2022 6:23 am
Hello Ubaranda!
have no knowledge of who it might be, but I give you my best shot!
If we anticipate that the mark's initials are JB it could, note COULD, be Jānis Bētinš active in Riga (1874-1955). Unfortunately his mark is not known, but the initials... Anyway they matches with the assayer's (ИС Ilija Sorokin's) working period 1888-1891. If you disagree, I fully accept it, but in that case what is your suggestion, what are the initials? Cannot do any better!