A rare, large and unusual electric powered wall clock with sweep centre seconds Signed Rolex, Chronometer, Pan Am, circa 1960 Movement: electric powered motor, 110-120V, cable and American plug Dial: signed Rolex, Chronometer, Pan Am Case: motor and Pan American World Airways label “Property of Pan American Airlines, 804 17th Street, Denver Colorado” to the back, 50 cm. diam.