IWC big aviation-watch gents wristwatch reference IW500401, self...

IWC big aviation-watch gents wristwatch reference IW500401, self winding, screwed down steel case with soft iron-inner case, original leather strap with original deployant clasp, black dial with Arabic numerals, luminous hands, power reserve indicator at 3, date, sweep seconds, rhodium plated movement calibre 51111, Pellaton-winding, 42 jewels, Glucydur-balance with Breguet-hairspring, 5 adjustments, diameter approx. 46 mm, original box slightly damaged, additional neutral leather strap enclosed, original papers, sold in January 2009, condition 1-2, property of a collector