Rolex Explorer Ref 5500 with extremely rare Bulls Eye dial, recently serviced. This watch is a rare survivor with original radium hands and dial, reacting at 600 CPM with the Geiger counter. The dial and hands are what make this watch special along with its very nicely preserved 1530 movement.
 
Make: Rolex
Model: Explorer 
Reference: 5500
Year: Circa 1959 (low 400k Serial)
Material: Stainless Steel
Dimensions: 34mm
Crystal: Plexi Glass
Movement: Automatic
Bracelet/Strap: Leather Band
Lug Width: 19mm
Box/Papers: No