I agree, check with the store or their website, www.marcjacobs.com.wickedassin said:That looks similar to a bag that's on MJ.com under Spring. The style on the website is called "tote" and even comes in the same color as the purse featured. Also if you go to nordstrom.com and click on "designer collections" and then go to the "marc jacobs building", then click on the outline of the bags, the hardware on that bag looks a lot like what they're calling the "MJ Sixties Leather Bowler" bag.
Your best bet is to call a MJ store and either describe the bag, fax the photo, or tell them which magazine it's in. They should be able to figure out what you're talking about if the bag is in their look book for spring--sorry that's the best I could do.... Good luck!