hi i have an officine panerai firenze 1860 , i bought it from an auction but can't find the model on the net to find its true worth . the front of the watch reads " luminor gmt , panerai automatic , the back reads officine panerai firenze 1860 , ozean chronometer Automatic, QP6635 , BB1148126 , Stainless Steal , 300 m . the clock is very heavy and looks quality . Can someone please help me out and identify whether this is a fake or or ?