2 x CASTROL DTV Motorsport Rally Stickers (Dealer Team Vauxhall).  Available in two sizes, 130mm wide x 80mm tall and 200mm x 110mm tall.

Wiki Fact:  In the absence of official sponsorship of motorsport by General Motors and Vauxhall Motors specifically, a group of London-based Vauxhall dealers in 1971 started an organization to financially support racing and rallying. It was known as DTV.