Ultra rare 6.5mm thick Girard-Perregaux ultra thin. One of very few known example to come for sale. Reference 9904. Mind boggling when one considers this is a piece from the early 70's that they were able to achieve this thickness- WITH domed crystal. In an era of gold cases this stands out as one of the early rare steel ultra thin dress pieces that brings durability to be worn day to day, and how it has aged is proof of that. Adheres to strict dress standards yet can be dressed down and worn casually. Beautiful blue slightly linen dial in unpolished case with crisp case lines. Another amazing @HudsonTime piece with original strap, crown, and buckle.