Claymo of an unknown master Riga - AFS initials - 1880.

IESClaymo Master Zellman Yogan Eric - Leningrad - initials of "IES"

AKClaymo Master Kurki Andreas - Leningrad - AK initials

ВНЧClaymo Master Chulkov Vasili Nikolayev - initials of the NIS - end of 19 - early 20th century

ХМClaymo of an unknown master Baku - initials of HM 1908

АМЧ-Claymo Master Chewarzin Anton Mihailovich - Moscow - initials of AM-- 1853-1897.

ПРClaymo Master Rotkov Pavel Capitons - with Sidorovsky - initials of RP - 1895.