This is an interesting bottle. The seal shows a cockerel which most likely is the seal of a tavern as this is less likely an individual's crest, though that is possible. The Cock Tavern was a common name throughout England. There was a Cock ale house in the Strand in London and a Cock Inn in Leadenhall Street, London in the eighteenth century and probably earlier.
Date: Circa 1730
Measurement: Height: 7"
Material: Black glass
Condition: Excellent condition except dullness to the surface suggesting it may have spent time in the water, perhaps in a stream. Not chips or cracks.