18K Gold Skeletonized Triple Calendar Pocket Watch 

Inventory Number: PW1903005

Made circa 1980 by IWC, reference 5501, 56mm diameter. 18K gold openface pocket watch, skeletonized dial, four subsidiary dials show the moon-phase, dates, month (small seconds) and day indicators, with month and day displayed in German. Housed with Cal.9727, manual-winding, lever escapement, 31 jewels, a beautiful open-work design.  

Functions: hours, minutes, small seconds, dates, day, month and moonphase indicator.