Unusual Mahogany Calendar Vienna Regulator. 7 in. inset porcelain dial with black Roman hour numerals and fancy pierced hands; brass 8 day weight driven movement with brass covered weight and brass 4 spoke pulley, ebonized wood pendulum stick with fancy shaped brass bob. Perpetual sub calendar mechanism in the bottom of the case, has 2 separate 5 in. porcelain dials signed “Franz Muller, Wein”, one indicates the days of the week, the other indicated month and date. In a mahogany lyre shaped Vienna regulator case with arched top, carved crest, turned finials and teardrop finial at the bottom; in good overall condition, case is refinished, no visible hairlines in the dials. 48 in. high x 15.5 in. wide x 5 in. deep. Weight: 26 lbs.