Unique Black Glass Sealed Nailsea Bottle Flask

A truly exceptional flask with seal incorporating a laying figure over a ships anchor. I believe the seal has been stamped upside down so deciphering exactly what appears is not easy to ascertain.  The flattened body is profusely enamelled with white splotches making this a highly attractive flask. No other examples are recorded. Rough pontil to base. Height 6.6 inches, width 4.5 inches. The seal was finished off rather crudely and left a tiny chip between the join and apart from general wear and a pinprick nibble on the lip there is no other damage. Pictured and recorded in Antique Sealed Bottles, page 1490 and also on the front page of Volume 3. English or Scottish C1740/60.