Air pressure rifle; The mechanism of the lock is mounted outwards against an iron plate which in turn is attached to a gold-plated brass lock case; the left side of which also serves as a (removable) screw plate; engraved with rococo style work; a Louis XVI style banderole and an oval medallion with an acclaimed male head and profile; a loop-shaped trigger guard is screwed to the lock case; on top of the lock case is carved work and a signature. The barrel can be unscrewed; encased in a circular wooden case with brass collars on both ends. The iron flask can be screwed off and at the same time serves as an air reservoir; the flask is provided with a brass collar; the cheeks are reinforced with a separately soldered iron plate; a rod is soldered to the soldered iron cap to set up the feed during pumping.; Joseph Jacob Groothuijs; Amsterdam; c. 1770; iron (metal); gilding (material); brass (alloy); wood (plant material); soldering; l 128.7 cm l 87.4 cm d 7.8 mm w 2.8 kg