This is a very rare example of the vintage midsize royal oak reference 4100. The original „long index“- dial with old audemars piguet font has fadet to an overwhelmingly beautiful hazelnut browntone. it´s lumecolor is matching the color of the lume in the handset. case (no 8xx) and original bracelet of this watch are in very good and fat condition, having been slightly polished before. the ap caliber 2123 was checked through and is running exactly. The royal oak comes in an AP leather travelbox.