PATEK PHILIPPE SOLAR CLOCK BLACK DIAL Patek Philippe, GenËve, Table / Mantle Clock, movement No. 874591, Ref. 928/66. Made in 1971. Fine and rare, solar-powered gilt-brass table / mantle clock with electrically-wound movement. Accompanied by the original Patek Philippe box. Gilt-brass, brushed, 4 square columns with engraved decoration, top with solar cells, hinged back door. Black with applied gilt-brass faceted baton indexes. Faceted gilt baton hands. Based on a 17''' Gondolo keyless mechanical movement, solar-powered with lithium battery.