Movement: gilded brass and steel, partly blued Case and dial: brass, silvered brass, silver; steel hand Movement: probably Nicolas Forfaict the Elder (recorded 1573-1619) French (paris) ca 1600-1610 A single long hand indicates the hours and half hours, marked on the silver chapter ring applied to the dial. A small hand attached to a disk that revolves inside the chapter ring indicates the moon's age in its monthly cycle (measured in days), and an aperture in the disk displays its phase 17.190.1607
aperture=f4.0 focal length: 60.0 mm exposure 1/160 sec ISO: 2000