Pair of blue glass mugs with silver mounts. Mid 19th century. Blue glass body. Silver mounting with hinged handle and lid. The fretel of the lid in the shape of a flower, the handle in the shape of a branch. Hallmarks: 84, Saint Petersburg and "IBH" (Johann Bernhard Hertz, active from 1835 to 1855). Height: 18 cm; diameter: 10 cm; gross weight: 1134 g and 1242 g [RUSSIAN ART]