1930s ROLEX Oyster "Flat Back" 1st Generation Very Rare Sector dial Retailed by Mappin Roma

This is a precious 1st generation silver sector dial Rolex Oyster Flatback manufactured in the 1930s. The 4-piece case consisting of bezel, middle case, back cover and movement holder is similar to the 1st bubble back model of the same age, and the seemingly unbalanced big crown gives the watch a unique aspect of the early waterproof case. The sector dial without numerals, also known as "Tokyo Metropolis," is a very rare gem that shows the aspect of the era.