Exquisitely machined .109” thick x 9-3/4” outside diameter solid brass plate. Month, days of the month, and corresponding zodiac sign (no zodiac illustration) are imprinted around the 7-7/16” dial. Two 1/8” holes on either side of the .582” diameter center hole. Three .080” countersunk mounting holes. 12 curved spokes separate the months. Used on Hermle’s Planetary Astrolarabium clocks. Regularly $400.00. While supplies last.