Claymo Master Ivanov Nikolai - Moscow - initials N.I. - 1868-1896.

АЧClaymo Master Chulkov Alexandre Konstantinov, c. Red - Initiators AH - 1898

БШClaymo Master Shabanov Booth - Ordzhonikidze - initials of BS - 1886-1917.

ИТClaymo Master Tarabra Ivan Filippovic - Moscow - initials of IT - 1893-1913.

АПClaymo Master of Eastuchov Alexandre Dmitriev - with Red - Initiators of AP - 1898.

ИАClaymo Master of Antonov Ivan Dmitriev - with Red - initials of IA - 1898

НАThe stigma of the master Alekseev Nikolay Vasilievich - Moscow - initials "on" - 1885 - the beginning of the 20th century