Klemo Master Conon Ivan - Leningrad - initials I.C. - 1832-1841.

14АFourteenth Moscow Arthel, initials of "14A" after 1908.

ПАClaymo of the unknown master of Novgorod - initials of the "P" - 2nd half of 19th century

К-КClaymo of an unknown master Leningrad - initials K-K - 1836.

F.F.The stigma of the master Frezen Frederick Achates - Leningrad - initials "F.F."

ПАClaymo Master of Atinogens Peter - Moscow - initials of "PA" - 2nd half of the 18th century

М-КClaymo of an unknown master Leningrad - initials of M-K - 1837-1869.