The Chronograph 1 – 911 Edition 50Y Porsche Design is reserved exclusively for those purchasing the Porsche 911 Targa GTS Edition 50 Years of Porsche Design, limited to 750 specimens. With its limited-edition number on the case back, the watch is inseparably linked to the sports car. Porsche Design has remained true to the look of the original 1972 chronograph. The current logo and lettering were used in place of the historic brand design, however – these details facilitated its transformation into a modern timepiece and tie it into the design philosophy introduced by F. A. Porsche.