Brave Fine Art has dated this piece to the 19th Century.
Take, for example, the left hand that's gently poised over her elaborately embroidered collar. Each vein has been carefully presented in an almost photorealistic style. The collar itself has also been handled beautifully.

We purchased this painting from a private collection and it's been well looked after throughout the years. It's housed within a later frame and signed in the bottom left.
Medium: Oil on canvas
Size including frame: 34” x 27½” / 87cm x 70cm x 4cm
Year of creation: c. 1880
Provenance: Private collection, England
Condition: Overall very good. Craquelure throughout but the paint layer is stable under varnish.
Brave Fine Art has dated this piece to the 19th Century.
Exquisite antique paintings that capture the imagination.
You can view the stock and full dealer information on the Brave Fine Art Profile Page