Royal Oaks can be placed into a number of different categories – including
link those that are "Jumbos" and those that are not. And then if you
link look inside the 50-year history of the two-handed "Jumbo," it can then be divided into references such as the original 5402 and the recently retired 15202. Even within the ref. 5402,
link things can be further segmented by serial numbers that start with either "A," "B," "C," or "D." But only one watch was owned by the creator himself.