The dead girl in the bed in the start of the movie blinks, not only once, but twice (!) before the sheet lying over her is pulled away.
On leaving the casino, Elina tells Jake that '100,000 Francs is a lot of money', referring to his loss on the tables, Monaco uses the same currency as France, and the Euro was introduced as a 'hard' currency on January 1st 2002, long before this film is supposed to take place.