Bidspirit auction | A Russian Siberian ”Ober-Bergant” steel

A Russian Siberian ”Ober-Bergant” steel and cut stone seal - A Russian ”Ober-Bergamt” steel and cut stone seal and ural semi-precious stones. Oberbergamt - an institution that managed Siberian mining plants, mines and goldfields in 1723–1734. Ekaterinburg, 18th century. Dimensions: 13.5 x 3 cm.