We’re heading into the most Michael Bublé time of the year, and the Canadian crooner’s newest fake watch is keeping him right on schedule. The “Santa Baby” singer, who has become a modern patron saint of holiday music, performed a show in Mexico City on Thursday night with a sleek perfect replica Rolex Cosmograph Daytona on his wrist. (He also showed off the same watch in a short Instagram video that was shared six days ago.) Launched in 1963, the luxury fake Rolex Daytona US has been constantly refined and reimagined over the past six decades and has established itself…