John Howkins Antiques has dated this piece to the 19th Century.
At the height of his business he employed over 90 craftsmen and exhibited at many International fairs and exhibitions including The central union of decorative arts in 1884, the world exhibition of Antwerp where he won a gold medal. In 1885 Viardot was awarded the Knight in the legion of honour. In 1889 at the Paris world exhibition he was awarded another gold medal and also received the same award at the worlds fair of 1900.
John Howkins Antiques has dated this piece to the 19th Century.
You can view the stock and full dealer information on the John Howkins Antiques Profile Page