Fully signed and very rare Heuer Autavia 2446C Gay Freres 20 mm all original stainless steel bracelet, completely original and unpolished. Stamped Swiss made with a date stamp of 3 70. The 20 mm endpieces are stamped “HLB”. It shows some usage, with light scratches, but otherwise is fine. It measures 5.75” from spring bar hole to spring bar hole. We have ultrasonically cleaned it only. It will come with new spring bars.