Someone went to a lot of trouble with this one, they've taken a Landeron 248 chronograph movement and then engraved Omega Watch Co as well as the Omega symbol and "321" onto the chronograph bridge in order to pass it off as a real Omega rather than some off brand chronograph thrown together for sale. http://www.ebay.com/itm/Vintage-Ome...471044?hash=item1a223b72c4:g:iosAAOSw5cNYH1XfPurchases made through these links may earn this site a commission from the eBay Partner Network