A very rare Mazzocchi percussion carbine with bayonet

dating: Mid 19th Century provenance: Papal States, Round, rifled, 18 mm cal. barrel, with octagonal breech, dated '1858', with pontifical stamp, serial numbers, fore-sight. Backward spring lock, marked 'F.lli Mazzocchi Roma'. Wooden, long stock. Iron mounts. Serial number '3xx'. Iron ramrod. With yatagan-bayonet (length 68.5 cm), with brass grip and scabbard. length 125 cm.