I went to NM yesterday to look the Balenciaga bag, but end up in YSL counter and fall in love with the Muse bag. I like the large size (I believe it's large, price is $1195), but the local NM only have a white color, I am not sure if it's ivory, or white. I asked the SA to put it on layway since I didn't bring my AmericanExpress card with me. Anyway, when I come back check on eBay, I found there are some listing on eBay for Muse. How do you tell the authentic of Muse from the picture? I am debating myself if I should go back to NM to get a new one, or I can just wait and find an used on on eBay. Any suggestion?