Custom Silicone Strap for Patek Philippe Nautilus | 5711, 5712, 5726, 5980 | 25mm Concave Interface. Model Compatibility: Nautilus 5711 / 5712 / 5726 / 5980. Silicone Rubber Strap for Patek Philippe Nautilus 5711 5712 5726 5980 | 25 12mm Concave Fit | Pin Buckle | Royal Blue, Black, Green, Grey, Light Brown.
eBay