Welcome, and congratulations on making your first post! No worries that it is a question, we welcome questions here.
You have had a very special good fortune drop into your lap, and a rare one at that!
The ref. 14802 was a 20th Anniversary edition of the original Royal Oak released in 1992. It was the first Royal Oak with a display back, allowing enthusiasts to see the legendary cal. 2121 and was fitted with a special rotor commemorating the edition.
following images courtesy of dsgalaxy1
"A Purist does not believe in gilt by association. Respect, AND disdain, have to be earned..."