Rolex Oyster, Flat Back, "England Dial, stainless steel, circa 1930s. This is a rare dial with embossed indexes and rail circles, which is also present in the bubble back of the same era called "England dial". The indexes and rail circles are gold, and the matte white dial with blued steel hands is a simple yet elegant design, and the old two-piece case that retains the precious big crown.