I have always personally refused to buy quarter century club watches due to their poor condition including dials and cases. This rare double reference 5590 // 1011 (Double signed inside caseback) is rare and all original. The watch has been polished previously but the 5590 reference is quite rare in these early models. The 1530 Butterfly movement is very clean and serviced.
 
Details:
 
Brand: Rolex  
Model: Eaton Quarter Century Club
Reference: 5590 // 1011 Double Reference in Caseback
Year: 1960
Material: 14k Gold 
Dimensions:  33mm
Crystal:  Plexiglass Crystal
Movement: Automatic Cal 1530 Butterfly Rotor
Bracelet/Strap: Rios1931 Leather Band
Box/Papers: No/No