Claymo Master Dobberman Efraim - Riga - ED initials

IFDClaymo Master Dors Johann Friedrich - Riga - initials of IFD

КРClaymo of an unknown master Leningrad - initials of the CR - 1884 - after 1908.

ГЮKleimo, unknown master Kiev, initials of the GJ, 1752.

ДТClaymo Master Tokmakov Dmitri Ivanov, with Red - initials of DT - 1898.

ТРClaymo Master Timofei Filippovic - Moscow - Initiators of T.R. - 1896 - early 20th century

FDThe stigma of the master of the cherries Johann Friedrich - Leningrad - initials "FD"