55. Patek Phillipe Sky Moon Tourbillon 5002P

And now the wildcard; the watch with a pricetag to make oligarchs wince and sheikhs shake. At a staggering 1.5 million dollars, the Sky Moon Tourbillon calls itself the "world's most complicated watch", with 686 parts and a whole other face on the back of the casing for keeping track of the moon's phases. Alternatively, spend the money on a subscription to T3 for 24,030 years - you won't believe the watches we're reviewing in our 288,557th issue.

Price: £934,000

Link: Patek Phillipe