Per the Royal Armouries in the U.K.: "Johann Baptist Contriner was born in Tyrol, perhaps in Essling. He became a master gunmaker of Vienna ('Bucchsenmacher Meister') on 7 August 1825, and his name appears in the city records until 1837." He is known to have manufactured advanced arms such as Girandoni system repeating air pistols and pairs of pill-lock pistols with built in primer magazines linked to the hammers. Each time the hammers are cocked, they are primed. The magazines and upper tangs have "1" (A) and "2" (B). The rifled barrels have dovetailed blade front sights, "JOHANN. CONTRINER. IN. WIEN.," gold plated breeches, golden "CONTRINER" maker's marks on the breech plugs, and two-leaf rear sights (one standing, one folding) is on the upper tang. The locks have "CONTRINER" at center, floral engraving, and birds near the tails. The pommel plugs also have birds and floral patterns. The trigger guards have engraved floral and martial patterns and spurs, and the pistols have adjustable single set triggers. The side plates are bestial mask designs. The stocks have Schnabel forend tips, scalloped border checkering, and swelled pommels. The case has brass fittings, green lining, a paperboard tube, mallets, rod, horn flask, bullet mold, and an adjustable powder measure.

See "A."