stumar, I would recommend that you contact the Tulane University/Newcomb Art Gallery, Woldenberg Art Center Tulane University New Orleans, LA 70118 p. 504.865.5328 | f. 504.865.5329
www.newcombartgalle ry.tulane.eduLet them know what you know (receipt/send a picture/send your markings). They may have some insight for you!!!
If it was me, I would!!!!
Glad you are interested in your family treasures. Who knows, it may be so rare it is worth $$$$ - irregardless, it is priceless since it was your families'.
By the way....what does the receipt say/show. Post a pic? Date?