1979 IDLE TYME Duck Electric Black Walnut Rolling Ball Clock Body Pat. 4077198 | eBay
Lot - Congreve Rolling Ball Clock (Replica)
Devon Clocks - Congreve type brass 'Rolling Ball' clock, with Arabic hour, minute and second dials, four turned pillar supports, on mahogany plinth, under glass, designed by Sir William Congreve in 1 -
LEGO Rolling Ball Clock | The Kid Should See This
A Curiously Mesmerizing Mechanical Rolling Ball Clock
Review: Time Machine rolling ball clock
Lot - CONGREVE ROLLING BALL CLOCK;
English Congreve Rolling Ball Clock - Renaissance Antiques
Mid 20th century 'Congreve' rolling ball clock, sloped arch and pierced brass movement, the central Arabic minute chapter ring flanked by hour and seconds dials, twin train driven eight day movement, -
Lot 783 - A brass Congreve style rolling ball clock,
Rolling ball clock - Wikipedia
Ball Clocks Page
A late 20thC Sir William Congreve rolling ball clock. - Bukowskis
Bonhams : A 20th Century Congreve rolling ball clock,