The trademark of master Grünbaum Heinrich Gottfried Ferdinand - Tallinn - initials "HG" - 1884-1908.

Similar hallmarks

HGClaymo of unknown master Riga, initials of HG, 1919-1940.

HCClaymo Master Clemens Herman Georg - Tallin - initials HC - 1806-1856.

Е.СClaymo Master Seppe Egor - Leningrad - initials E.C. - 1823-1848.

БКClaymo, unknown master Tbilisi, initials of BC, 1899-1908.

НБThe stigma of the master Bilibin Nikolay Vasiliev - Kaluga - the initials "NB" - 1868-1890.

HISClaymo of an unknown master of Narva - initials of HIS - 17th century
