Unique yellow 3" x 5" Coral Bingo membership application form signed on the reverse in blue ballpoint pen by George Harrison and legendary Formula One racing driver Jackie Stewart. In very good condition, with some scattered wear. Accompanied by a Tracks COA. The signatures date to the 1980s. Harrison and Stewart moved within many of the same celebrity and motorsport social circles during this era, making their appearance together on a single signed piece an interesting crossover between rock music and international auto racing history.