Rolex Explorer II 1655 Mk1 Straight Hand watch-tool This watch has an added

This watch has an added bonus in that it has a sigma dial

You can read about this here

and the punched warranty card

This was an interesting move by the Rolex brand

blued Breguet hands and a blue stone cabochon-topped setting crown

Rolex Explorer II 1655 Mk1 Straight Hand watch-tool This watch has an addedThe Rolex Explorer II Reference 1655 is widely regarded as one of the coolest and perhaps still somewhat underrated vintage Rolex sports watches available on todays market. Originally developed for cave explorers and speleologists working in environments without natural daylight, the fixed 24 hour bezel and large orange 24 hour hand allowed the wearer to clearly distinguish between day and night at a glance. This particular example is an early