Ron_W
·The pizza slices are not sectors as i see them on watch dials. The sectors on watch dials cut up the hour ring - in different ways - and have a ( semi) circle ring on the inside of the numerals and there is usualy a minute ring ( rail road track ) on the outside of the minutes.
First patented dial ;
most known in a watch from Patek Philippe, Laurent Ferrier and your CK 859. Here are some more examples also showing a busier version often reffered to as "scientific" dial ;
https://revolutionwatch.com/the-watch-face-sector-dials/
The Watch Face: Sector Dials - Revolution Watch
First patented dial ;
![Longines Stern Freres Sector dial depose_Pagina_1.jpg Longines Stern Freres Sector dial depose_Pagina_1.jpg](https://omegaforums.net/data/attachments/1615/1615095-d02e3a19e7fbddcccfdbaf0d121ac246.jpg?hash=0C46Gef73c)
most known in a watch from Patek Philippe, Laurent Ferrier and your CK 859. Here are some more examples also showing a busier version often reffered to as "scientific" dial ;
https://revolutionwatch.com/the-watch-face-sector-dials/
The Watch Face: Sector Dials - Revolution Watch