The Rolex Zephyr is a superb sector dial watch, this specimen is quite early with a very special 545454 S/N dating this watch to 1960. It does have the original and rare Large Rolex Crown Butterfly 1530 Movement.
 
Make: Rolex
Model: Zephyr
Reference: 1008
Year: 1960
Material: Stainless Steel and 14k Gold
Dimensions: 34mm
Crystal: Plexi Glass
Movement: Automatic
Bracelet/Strap: Leather
Lug Width: 19mm
Box/Papers: No