Claymo, unknown master Tbilisi, initials of the MB, 1899-1908.

СМThe color of the unknown master, with the red initials of the SM, the end of 19 - the beginning of the 20th century

БМClaymo of an unknown master of Kiev - initials of BM 18

GWThe stigma of the master Wulf Georg Wilhelm - Tallinn - initials "GW" - 1838-1882.

МЗClaymo Master Zorin Mih. Mia. - Moscow - initials of the MZ 1905 - after 1908.

INClaymo Master Nemman Johannes - Tallinn - Initiators IN - 1924-1940.

СМClaymo Master Measoidov Sem. - Moscow is the initials of the SM. 19th century