... because Bryon didn't sent it from Paris, but from the USA. Also, because it isn't a normal postcard. It is a free one from a restaurant in Portland (Oregon), intended to be left at the restaurant with the customer comments about the food and service. But it would be a pity not to sent it!
Although the postmark on the front side seems to be part of the design, it is the real one. And also that little scratch.