State Express 555 Gold King Box is a premium Virginia blend cigarette from one of the world's oldest and most recognized tobacco brands. Originally introduced in London in 1896 by the Ardath Tobacco Company, State Express 555 became the flagship product of the brand and is now owned and distributed worldwide by British American Tobacco (BAT) through a joint venture with China National Tobacco.

The Gold variant offers a smooth, refined smoking experience consistent with the brand's longstanding tagline, "Smoothness Above All Else." The King Box format contains full-size cigarettes packaged in a standard hard-shell box. State Express 555 has a long history of international prestige and recognition, having held a Royal Warrant from both King George VI and Queen Elizabeth II, and famously sponsoring the Subaru World Rally Championship team from 1993 to 2004.