THIS IS THE SQUALE 1000MT REF. 2002 LIMITED EDITION (ONLY 230 PIECES) FOR UNIT DIVER ITALIAN POLICE, THAT I SELL. PRESENTED AT BESEL2017, OF 230 WATCHES ONLY PART HAS THE NUMBER OF PATENT OF DIVER UNDERWATER WRITING ON THE BACK. THIS IS THE 58 OF 230 AND ON THE BACK IS SIGNED THE PATENT DIVER'S …