Rare percussion knife pistol by Unwin & Rodgers with .31cal octagonal barrel and bead foresight, full length horn grips, hidden folding trigger and hinged butt cap and tweezers. The German silver body contains 2 blades, both with Sheffield trade marks and the larger one with the engraved motto "Self Protector" inside foliate decoration. Nice example in full working order. Overall length with blades folded 16.5cms. Larger blade length 9cms