This antique frame is a distinct style from the early 19th Century, related to the Empire style which originated in Napoleonic France. The frame has composition ornament Greek scrolling corners featuring the caduceus from Greek mythology, and a deep scotia shape. I believe this particular design came after the Empire period during the time known as the Bourbon Restoration, (the period marking the two occasions when Napoleon lost the throne). The general Empire style was also adopted in German and was known as the Biedermeier style.
This frame has clearly been over-painted, this will be removed and the frame will be restored to an original condition.