The hallmark of the master Goldsmith Jürgen - Tallinn - initials "IG" - 1538-1554.
Similar hallmarks
MRClaymo Master Roloves Mattias - Riga - initials MR - 1555-1574.
LSKleimo, unknown master Narva, the LS initials, about 1670.
ICBClaymo Master Borrowski Johan Christof-Riga - Initiators of IB
ММКClaymo of an unknown Master Pskov - initials of MK 1793.
The city hall of Hapsal 1-third of the 18th century Yakor
HMClaymo Master Meyer Henrich - Riga - initials HM - 1654-1694.