PANERAI: PAM 360 "Mx68/300" SERIES BOX & CERT DATED 2010. Panerai OP I calibre manual winding in stainless steel PVD case 44mm, Panerai Luminor Base Model. This watch is a Classic Looking Panerai, and is in high demand. Panerai only produced 300 Pieces Worldwide in the "M" Series. New original Panerai leather strap with Panerai tang buckle.