Pyrotechnic blunderbuss with arms of Cornelis Tromp; Pyrotechnische blunderbuss. The lock plate is engraved with leaf scrolls and a signature; the rooster is ajour worked and engraved with; among other things; a fabulous sea creature. The barrel of cast copper has a heavy construction and bears the family crest of Admiral Cornelis Tromp. The flask is easily cut. The batter of cast yellow copper; formerly gilded; has embossed relief decoration and consists of; a screw plate in the form of a winding sea snake; an oval crowned thumb plate with an acanthus leaf on the underside; and a butt cap that ends in an acanthus leaf; the blackened walnut loading stick has an iron cap; Cornelis Tromp; Jan Knoop; Utrecht; 1655 - 1685; brass (alloy); walnut (hardwood); iron (metal); gilding; l 79 cm h 19.5 cm x d 7.5 cm x w 5.7 kg l 40.8 cm d 38.9 mm