A 19th century graphite sketch of lovers Venus and Mars 1801 signed

A signed and dated (1801) French graphite drawing of the lovers Venus and Mars .  The image measures 19” x 14” and depicts Venus and Mars in their conjugal bed. The shield and weapons of Mars lie on the floor beside a pair of doves.  As visible in the photos, the rear of the piece shows some staining and loss to the lower margin.  The piece is dated 1801 and signed, though I am unable to make out the signature.  There is a fold down the center.  Someone has applied some tape to the center and to the peripheries at some point.  See photo of reverse.  Still a very appealing piece with lots of character. Please ask if questions.