This early "Zenith Daytona" 16520 was born with a beautifully serifed "upside down six" dial, the first to feature 5 lines of combined text at 12 o'clock, and the all matte "78360" Oyster bracelet. The tritium lume has taken on exactly the creamy aged hue that collectors love and whats more the watch is complete with its full set of original Rolex box, warranty certificate and booklets from the summer of 1991. One of the best performing investments in the watch world.