Rolex Explorer Ref 5500 with extremely rare Bulls Eye dial, recently serviced. This dial is known to be a Canadian-market only. 
 
Make: Rolex
Model: Explorer 
Reference: 5500
Year: Circa 1960's
Material: Stainless Steel
Dimensions: 34mm
Crystal: Plexi Glass
Movement: Automatic
Bracelet/Strap: Leather Band
Lug Width: 19mm
Box/Papers: No