NOT KNOWN DETAILS ABOUT ROLEX COSMOGRAPH DAYTONA

Following Zenith Radio resold Zenith in 1978, Ebel determined to purchase some unassembled Calibre 3019PHC movements in 1981, which Zenith assembled from leftover spare pieces.[24] Rolex expressed interest in using the 3019PHC to power a different series of Daytonas, but wouldn't award the ten-year agreement to Zenith until finally they could resum