Audemars Piguet Royal Oak Chronograph 26240BA. OO.1320BA.01 '1017 ALYX 9SM'. Reference Number: 26240BA. The Audemars Piguet 1017 ALYX 9SM is a distinctive between Audemars Piguet and designer Matthew Williams of 1017 ALYX 9SM, limited to 202 pieces.
eBay