Gruen Airflight in solid 14k gold case. If you know what this is, you know what this is. This is a superb men's dress watch with a very special complication: the watch is correctly displays the hour from 1 to 24! You always know AM or PM, and the military hour of the day. It was designed for pilots and anyone else working with 24-hour time.This Airflight is fully functional. Hours snap over at 1 PM from 1-12 to 13-24 as designed. Sets, winds, runs and keeps time well within a minute per day.14k Case in very good condition with minor scratches. It is a one-piece case, and the only way in is by lifting the crystal.Dial and hands in excellent condition with only one small flaw that I could see (in the print of Gruen, if you're wondering).Crystal has a flaw/damage at 8:00/20:00. May need to be replaced. Hard to see unless you're looking for it. Crystal is otherwise clear.Movement is Gruen's in-house 422RSS with Airflight modification. Band is genuine croc but pretty worn and should be replaced. 18mm.The last service date is unknown and a service is strongly recommended to preserve this watch for future generations.The Airflight model is usually found in stainless steel, base metal, or gold plate. The solid 14k version is uncommon, since the target demographic (pilots) would want a cheaper watch. As of the time of this listing, this is the only one available for sale on the internet.