Help I dont have sertificate

I need some help:For my birthday I was surprise with Vacheron Constantin watch Overseas model 49150.But I dont looking this watch in your collection and now I am not sure that my watch is original or  replica.If it possibility to showing some pictures on original model
Here is a link to the VC site...
09/18/2008 - 12:53
and you can find information and pictures of the Overseas Chronograph, Ref. 49150: Vacheron Constantin's Official Website Alternatively, you can post pictures here of your watch and people can probably tell you whether it is authentic or not. Cheers, Duncan