This is an historic New Orleans Roofing Slate with an art print of a street scene painting on the front. The sketch is labeled "St. Ann Street at the Presbytere" I can't read the signature of the artist, but it looks like Collinay. The label on the back reads "Roofing slates mined in Pennsylvania and transported down the Ohio and Mississippi Rivers on rafts. Became the roofing material after the disastrous fire of 1795. Each one was individually hand shaped. This one came from one of the old buildings in the Vieux Carre area and dates back to the late 1700s and early 1800s." Archie's Sketches 4804 Elmwood Parkway, Metairie, Louisiana 70003." The slate is 9 1/4" x 7 1/8."