The stigma of the master Mansfeld Christopher II - Tallinn - initials "CMF" - 1715-1740.
Similar hallmarks

СЛClaymo Master Larion Samson - Moscow - initials of SL 1710-1739.

ПСClaymo Master Semenov Petr - Moscow - initials of FS 1739-1777.

VHKThe stigma of the master Köln Henrych - Riga - the initials "VHK" - 1679-1692.

CFNClaymo of unknown master Tartu - initials of CFN - 17th century

BDIIClaymo Master Derhman Berend - Riga - initials of BDII - 1660-1690.

City stamp of Yaroslavl 1856-1858 "Bear"

