Such a model exists - google search "Omega Seamaster quartz pie pan" and you'll find similar examples. As to whether this one is real it's hard to judge from the pictures... they're tiny and low resolution.
Here's another: http://www.ebay.co.uk/itm/Authentic...Gold-Plated-Wrist-Watch-Pie-Pan-/132191281671Purchases made through these links may earn this site a commission from the eBay Partner Network Looks like the same number stamped in the back, and the same size, making this a ladies watch.
Yea this is the "other" seamaster piepan, a lot less nice, less gold and less mechanical than the 50s versions. They're real Omegas but not worth very much.