5512 PCG watches are quite rare to begin with and having a Gilt White Swiss Dial is extremely difficult. The lume of the hands, dial and pip are Zinc Sulfide Tritium, they lume for a short period under black light and rapidly lose their luminescence. The case has been previously polished and its large bevels are still present. The bezel and insert are in very good condition for the age as well as the dial which matted over time due to the lacquer bubbling. 

Details: 
 
Brand: Rolex 
Model: Submariner
Reference: 5512
Year:  1961
Material: Stainless Steel
Dimensions: 39mm
Crystal:  Original T19 Crystal
Movement: 1530 Non-Chronometer Early Movement
Bracelet/Strap: 20mm Diametris Leather Band
Box/Papers: No/No