An Austrian model 1851 tube lock cavalry pistol

An Austrian model 1851 tube lock cavalry pistol, 16 bore barrel 9.25 in., with various control marks including Liege export mark to the top, and '201' to the tang; Augustin tube lock, the plate marked '853' (for 1853) and with Austrian Government acceptance mark behind the hammer, beech full stock with brass furniture including double-strap barrel band and grip cap, iron lanyard ring.