I think it is the Day, or maybe the Courier?
http://cgi.ebay.co.uk/Stunning-Fuchsia-Messenger-Bag-by-Balenciaga_W0QQitemZ260062050745QQihZ016QQcategoryZ63852QQrdZ1QQcmdZViewItem
http://cgi.ebay.co.uk/Stunning-Fuchsia-Messenger-Bag-by-Balenciaga_W0QQitemZ260062050745QQihZ016QQcategoryZ63852QQrdZ1QQcmdZViewItem