Square wooden framed lunar calendar, 315 x 315 x 15mm
Consisting of three card movable discs, with a movable wooden needle, outer disc 28cms in diameter, dials printed in black with additional hand-coloring in red, with lithograph explanatory label on verso, with further additional manuscript notation, and numbered ‘No. 9’ in pencil. Missing one of the three small red tabs designed to move disc, but device still operational. On verso “Tableaux donnant jusqu’à l’an 2200, celui de gauche les epactes depuis la réforme Grégorienne, celui de droite les Lettres Dominicales depuis l’an 400 aprés J.C.”