The stigma of the master Solomonov Grigory Davydov - Astrakhan - initials "GS" 1857-1884

АСClaymo Master of Alexei Isaiev - Moscow - initials of AS = 20th century - 1830.

ВСClaymo Master Savel Vassili Piemenov - Costrom - Initiators of Air Force - 1849-1874

СПKlemo Master Petrov Sáveliy - Moscow - initials of SS 1755-1777.

П.СClaymo Master Samsonov Pavel Vasiljevic - Moscow - initials of P.C. - 1899-1908.

СРThe stamp of master Samuil Vasilievich Rostovsky from Kiev, marked with the initials "SR", was used between 1787 and 1796.

АСThe stigma of the master Solomakhin Alexei Yakovlev - Kostroma - the initials "AS"