A little word on a dial changes everything. The Royal on these 6426's makes them quite rare and desirable overall. The watch is very honest with patinated dark lumes on the dial and yellow hands.
 
Details:
 
Brand: Rolex
Model: Oyster Royal
Reference: 6426
Year: 1966
Material: Stainless Steel
Dimensions:  34mm
Crystal:  Plexiglass
Movement: Manual Wind 
Bracelet/Strap: Rios1931
Box/Papers: No/No