Wow, quite a long title!
Re post this to the "authenticate this" sticky at the top of the Marc forum.
Hi Labello-they will tell you in authenticate this but I am sorry to say this is a fake bag... Among other things the white tag is incorrect for Marc Jacobs.
besides the tag, what else?
I was going to mention the tag as well. The stiching doesn't line up on the bottom of the bag. I don't own a Stam but that may be a sign as well.? Owners of Stams can speak about that better than I.
^^you will get more response and explanation if you post it in the appropriate thread. thanks!