Claymo Master Nügren Theodor - Leningrad - TN initials

АПClaymo Master Andrei Mih of Posters. - Moscow - AP initials.

А-НClaymo of an unknown master of Moscow - initials of A-N - 1829.

Г.ИClaymo Master Ivanov Grigori - Leningrad - initials of G.I. - 1841-1857.

МКClaymo Master Kilpelain Mathias Henry - Leningrad - initials of MK

МНKlemo Master Narunovich Matwey - Kiev - initials of ZB - 1735-1758.

ГКKlemo Master Klingert Gustav Gustavovic - Moscow - initials of GK