Could possibly be a copy from the Revolutionary War period. Cup is 6" tall, 4 1/2"diameter at bottom tapering to 3 1/4" diameter at the top. Heavy black leather, machine stitched. Sturdy handle is 1/2" thick leather. Approximately 1 quart capacity. MUST BE COATED INSIDE WITH PARAFFIN OR BEESWAX TO PREVENT LEAKAGE.