Experimentation extended to unusual dials of different materials, and colors with the 1920s and 1930s. Such improvements continued with the generations with asymmetry and juxtaposed geometries accentuated in the 1960s. Consequently, the shockwave which was the 1972 Royal Oak had been according to the overall layout philosophy of the house, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/