Ontario | London | Single-shot | No PAL Required

No license required. Mark 2 -- 2 star. Canadian marked the 27th (St. Clair Borderers Battalion). Lock plate is stamped "L.A.Co. 1861"  (London Armoury Company). Don't see any stamping on the cleaning rod.

Have to sell off all my stuff unfortunately to pay some bills 1050 shipped. Derringer slides forward and has an adaptor to fire 41 cal balls with a percussion cap and powder that was often lost. It can also take 41rf cartridges and brass.

Do not know much about the builder of this gun but based off the work you can tell he was a true gun builder.

Based off butt plate I would assume this was his #182 gun he built

I believe the forend cap to be horn. 

Springfield 1864 / 1866 Allin Alteration, Type 2.