An 18th century air gun such as this would have been used primarily for indoor target shooting. No maker markings visible. The brass round barrel loads at the top of the breech with a sliding brass breech cover, chambered in approximately .30 caliber/7.5 mm (possibly for use with 7 mm darts with a hair tail), post front sight, an empty hole where a rear sight likely once resided on top of the rear barrel band, a winding mechanism accessible from the left that cocks the piston inside the brass cylinder air reservoir located behind the barrel (requires a key for cocking, not included), and fitted with a walnut stock. Circular brass collection tag marked "R.D. BEEMAN/PRIVATE/COLLECTION/2102" hanging from the trigger guard. Provenance: The Dr. Robert D. Beeman Collection