Claymo Master Arharov Ivan Andreyev - Leningrad - initials of IA - 1895-1917.

КРClaymo Master Ryabkov Kalin - Novgorod - Initiators of CR - 1849-1870.

ЕКKlemo Master Kozin Eustafy Vasiliev, with Red - Initiators EC - 1898

ГЕClaymo of an unknown master of Moscow - initials of "G" - 1762.

КГClaymo Master of the Kuzma Fedorov's Blues. Novosels - KG initials - 1898

КСClaymo Master of Spandik Karl Friedrich - Leningrad - initials of "X" - 1874 - early 20th century

ЕКClaymo Master of Evestafiy Ivanov's Komarov, from Podol, initials of the EC, 1898.