Claymo of an unknown master Leningrad - initials I.C.A. - 1858.

C.G.S.Claymo Master Silund Karl Gustave - Leningrad - initials of C.G.S

П.А.Л.Claymo Master of Lobanov Petr - Moscow - initials of P.A.L. - 1861-1883.

G-M-TClaymo Master Tolpo Gabriel Martin - Leningrad - G-M-T initials

F.E.H.The stigma of the master Henrichsen F. E. - Leningrad - the initials "F.E.H."- 1870-1890

C-R-WClaymo Master Whitting Carl Reingold - Leningrad - initials of C-R-W

O-R-PClaymo Master Pettelius Otto Reinhold - Leningrad - O-R-P initials