 The clock dial has been dated to either the building phases of 1405 or 1467 @-@ 83 , or to the installation of the Brunner clockwork in 1527 @-@ 30 . <unk> <unk> notes that the planisphere uses a southern projection , as was characteristic for 15th @-@ century astronomical clocks ; all later such clocks use a northern projection . This would seem to confirm the dating of the clock to the 1405 or 1467 / 83 renovations . 
