 The eastern clock face features an outer ring of large golden Roman numerals , on which the larger hand indicates the hour , and an inner ring on which the smaller hand indicates the minutes . The golden sun on the hour hand is pivot @-@ mounted so that it always faces up . Below the clock face one sees an idealised profile of city founder Duke Berchtold V of Zähringen . While the exact decoration of the clockface has varied from renovation to renovation , the current ( post @-@ 1983 ) layout is generally that of 1770 . 
