amanico[JLC Moderator]
403250
Audemars Piguet Royal Oak 15400. A shot I took at the SIHH, in 2012.
Unveiled in 2012, in the same time than the 15202 " Jubilée ", it offered a choice between the thinness of the " re edition " and its bigger case plus the central second, with a slightly different dial and hands.
Here is the shot in question:

For the comparison, the 15202 from 2012. ( Press File picture ).
What kind of Royal Oak guy are you?
Best,
Nicolas