Claymo of an unknown master Leningrad - PJS initials - 1886-1908.

АБThe Claymo of the unknown Master Tula, the initials of AB, the end of the 19th century

ВТСClaymo Master of Sokolov V. T. - Moscow - the initials of the VTS - St. Four. 1908

БКClaymo, unknown master Tbilisi, initials of BC, 1899-1908.

ЯБClaymo Master Borisov Yakov Alexeiev - Moscow - initials of the YB - 1876-1896.

В-НClaymo Master Nazarev Vasiliy - Moscow - initials of V-N - mid-century of the 18th century

ВКClaymo Master Kalenov Vasili Aleksandrov, with Red - initials of VC - 1898