A distinctive Pre-Vendome (Pre-V) model is the "Logo" Luminor, named because of its characteristic "OP" Logo on the dial has a 44mm stainless steel case, with a black dial displaying only Tritium hourly marks. Its closest contemporary relative is a Luminor Base. A total of 10 prototypes were produced and a total of 667 regular watches were made. This watch is absolutely collectible, the first one of made during the Pre-V "PURIST" era of mid-1990's…So, it is a Panerai-collector's DREAM - virtually difficult to locate. You truly have to see it to appreciate it.