1991 Cartier Basculante

What could be a better watch for someone who doesn't really like watches than a watch that can suddenly become a simple bracelet with a flip of a dial? The JLC's Reverso is most people's reference for reversible cases but this rare Cartier features the same concept, executed using a slightly different (and more elaborate) mechanism.

Major bonus points for being produced as a limited edition run of just 91 examples, on my birth year of 1991.