New gents Patek Philippe Nautilus Annual Calendar in stainless steel Ref# 5726/1A. On stainless steeel bracelet with latched concealed double deployment clasp. Hinged case with smooth bezel and sapphire crystal display back. Case dimensions are 43mm x 38mm (not including hinge). Self winding movement with day, date, month, 24 hour display, and phases of the moon. Anthracite ribbed dial with luminescent hands and hour markers. Box, pusher, and papers dated May 2018.