Art- Original Art- Vintage Ink Drawing

Very old original ink drawing of a stylish woman in a gown at the base of a staircase. The piece has a vintage art deco feel. It's a black ink sketch on sepia toned paper, and may be an unfinished piece, as the figure has blue hair but there is no other colour in the piece. There are no visible markings, date or signature, as the original very thin paper was glued (!) to the cardboard, then framed. The original drawing may, when it was first drawn, have been pinned to a bulletin board or wall, as it has barely discernible pin holes. The frame (11x14) has seen better days, and its age and condition actually lends itself to the mystery of the origin of the piece. It is, in my opinion, a remarkable find. Available if the ad is up. Glendale Sw area