Giant Black Glass Mallet Wine Bottle C1780

Exceptional example of a large mallet wine bottle from the second half of the 18th century. Thick heavy glass base with blob top form lip. Sloping shoulders with sagged base. Height 14 inches, width 7.5 inches. No chips, star cracks or damage, just some typical light scratches from use only. The pontil mark is 3 inches wide. English C1780/1800