Karen Tarleton has dated this piece to the 19th Century.
It does have the original oak frame.

Thomas Blinks was a self taught artist. He studied equine anatomy and the graceful musculature of horses during regular visits to Tattersalls, the leading auction house of racehorses and soon became sought after for his hunting subjects and paintings of dogs. His work was first seen in London at the Dudley Gallery in 1881, then at the Royal British Academy in 1882, and at the Royal Academy and Royal Institute of Oil Painters the following year. He was also commissioned to depict King George V when he was out hunting. 54 BY 72
Karen Tarleton has dated this piece to the 19th Century.
You can view the stock and full dealer information on the Karen Tarleton Profile Page