Antique Wood Framed Original Painting On Slate Painted on both sides

Antique double sided painting in an old wood frame. The paint has a rough feel to it and faint sparkle when held at an angle in the right light. The light side has a discolored line like it has a scratch. Not sure how old it is but the style looks very old. Purchased at an estate sale. Please view photos carefully and Please take advantage of the zoom feature when viewing the photos. The photos count as part of the description in case I miss a visual defect in the written description. Most of our listings were described by researching and using information we found on similar things. Feel free to ask any questions. We try to describe as best we can, if we miss something it's not intentional. THANK YOU FOR SHOPPING WITH US