Claymo Master Beyer Karl - Leningrad - initials of "CB."

DRThe stigma of the master Reader Daniel - Leningrad - initials "DR"

C-TThe stigma of the master Tegelste Karl Johann - Leningrad - initials "C -T"

GWThe stigma of the master Vekman Gustav - Leningrad - initials "GW"

JHClaymo Master Hainon Johan - Leningrad - initials JH

S-AClaymo Master Arnd Samuel - Leningrad - S-A initials

F.SClaymo Master of the Sukh Friedrich Eduard - Leningrad - initials of F.S.