A RARE FRENCH SINGLE-TRIGGER SUPERIMPOSED LOAD TWO-SHOT PERCUSSION PISTOL with rifled twist turn-off sighted barrel signed in full on the top flat and decorated with deeply etched panels of flowers and foliage on the cylindrical breech, platinum plugs, long etched back-strap, back-action locks etched en suite, the right lock signed, finely figured walnut butt, and etched butt-cap with lanyard ring, by Le Page Moutier Breveté à Paris, circa 1840