Bidspirit auction | A GOLD FILLED RETROGRADE JUMP

A GOLD FILLED RETROGRADE JUMP HOUR POCKET WATCH MODERNISTA PATENT of open-face circular form with an engine-turned gilt dial having a jump hour aperture at twelve, a blued steel retrograde minute hand to an arched minute scale and a subsidiary seconds dial at six, stem-wound to the pendant. (Diameter of the dial 4.2cm )