I have gotten a Louis Vuitton bag and would like to know if it is real. I have pictures of it as well as the date code, which is M503 on a leather type tag. There is also a tag on the inside that says Louis Vuitton Paris..made in france. It has the LV on all of the rivets,studs as well as the zipper pulls. It is a momogram purse similar to the Canvas Alma. Is there anyone that can help me to authenticate this bag?