Selection of the stamp by the letter "ПМ"

ПМ Claymo Master Milukov Petr Pavlovic - Moscow - initials of the PK - 1877-1912.

ПМ Claymo Master Mishukov Pavla Aleksandrovna - Moscow - initials of the PK

ПМ Claymo Master Mishukov Pavla Aleksandrovna - Moscow - initials of the PK

ПМ Kleimo Probe Master Novgorod - Fedorov Petr - initials of the PK - 1747-1764.

ПМ Kleimo, unknown master Kazani, initials of the PK, 1789-1797.

ПМ Klemo Master Murokin Petr Mihailov, with the red initials of the PK, 1898.

ПМ The Klemo of the unknown master of Archangelska, the initials of the M.P., are four. 19th century