I have been surfing the web and just stumbled across not 1 but 2 5016's up for auction on the Christies website in New York on the 16th of June.This is my favourite patek model because so many complications are housed in a simple,yet beautiful caseing.I saw this model when I visited the Patek museum last year.One of the models for sale has the production number 1905 001(the one in the museum is 1905 000).Is this particular model being discontinued and are they as rare as stated???