A biscuit porcelain bust of Catherine the Great, Imperial Porcelain Manufactory, mid 19th century

after a design by Shubin, mounted on a cylindrical marble and ormolu base with acanthus-tip ornament, apparently unmarked

The model is after the 1770 marble bust by F.I. Shubin, for the original see: State Tretyakov Gallery catalogue of the collection Sculpture of the 18th to 19th Centuries, volume 1, Moscow, 2000 p. 278-9.  For a similar model by the Imperial Porcelain Factory period of Alexander II, see Christie's London, 6th March, lot 310.