Anyone who has ever scanned listings for classic cars has likely seen sellers boasting of a “black-plate car,” in reference to the California-native 1960s-era vehicle they have on offer. These era-correct license plates have long been viewed as a sort of badge of honor among West Coast enthusiasts, one that has been recognized by car folk across the country. Now the state of California is preparing to issue brand-new license plates with the familiar chrome-yellow digits on a black...