This is the Ralph Lauren Bedford. It's one of their collection bags (very high end) - you can only get them at their full collection boutiques, not in any department stores.
http://www.ralphlauren.com/product/...2287709&view=all&ab=viewall&parentPage=family
I'm pretty sure this is indeed the Bedford (side zippers are even right).
Go to Ralphlauren.com
Then click on Handbags
A drop down will appear - click on Ralph Lauren Bags
Then click on view all in the top or bottom right corner.
Then scroll till you come to the bedford bag.