California Special Mustang
In mid-February 1968, the California Ford Dealers (Ford Dealer Advertising Fund) began to market a factory-built, limited-edition Mustang, called the GT/CS, or "California Special". The hope was for a targeted production run of 5,000; however, only 4,118 were made, including 251 units that were remarketed in Denver, Colorado, as "High Country Special '68".
Source: Wikipedia — California Special Mustang (CC BY-SA 4.0)