The stigma of the master Bilibin Nikolay Vasiliev - Kaluga - the initials "NB" - 1868-1890.
Similar hallmarks
HGThe trademark of master Grünbaum Heinrich Gottfried Ferdinand - Tallinn - initials "HG" - 1884-1908.
П.Н.Klemo Master Nikitin Prokopy Akim - Moscow - initials of P.N. - 1885 - early 20th century
IHEClaymo Master Eyland Johann Henrich - Tallin - Initiators IHE - 1829-1842.
ДНThe stigma of the master Nikolaev Dmitry Nikolaevich - Moscow - initials "DN" - 2nd half of the 19th century
А-АClaymo Master Abakumov Abram - Novgorod - initials A - 1818-1851.
БКClaymo, unknown master Tbilisi, initials of BC, 1899-1908.