1950's Black Slate Chalkboards - $10

Details:

Over 50 black slate chalkboards in 4' x 4'-6' sizes at 3/8" thicknesses and greater. Priced at $10/sq ft.

More info and pictures:
https://sites.google.com/a/placemakersinc.com/placemakers-inc/Materials/Masonry/slate-chalkboards