With its winged dragons supporting shield-shaped drum and concave plinth resting on naturalistic paw feet, the design of this highly unusual clock is apparently unique. The audacious combination of these and other ormolu elements suggests a specific commission carried out by one of St. Petersburg's most talented bronzier. The most capable artists producing luxurious gilt-bronze items were Friedrich Bergenfeldt (1768-1822) and Andrei Schreiber (1777-1843), and both supplied many ornamental bronze items to the Imperial Court (I. Sychev, Russian Bronze, Moscow, 2003, pp. 94) Obviously, many designs for bronzes were supplied to them by architects working on projects for the Emperor and his Court, and Andrei Voronikhin is particularly noteworthy as he produced various designs for items with winged creatures similar to the dragons on the present clock. They are particularly close to those on a design for a vase executed by him in 1801 which is illustrated in ibid.p. 91.