This fork is a part of the Hunting Service commissioned by Catherine II from the Meissen Porcelain Factory for Count Orlov. The service was kept at Gatchina and was considered one of the palace's main attractions.
Today, almost the whole of the service belongs to the Gatchina Museum. At one point, Alexandre Popoff's collection had around 100 pieces of this service, the largest number of pieces ever held in private hands. Now, only the stem of this fork remains to hint at the splendour and beauty of the service as a whole.
For further references see:
U. Pietsch, Exhibition catalogue, Meissen for the Czars: Porcelain as a Tool of Saxon-Russian Politics in the 18th century, The State Art Collection Dresden, Munich, 2004, pp. 95-101.