The Eagle Weslake Mk1 was a Formula One racing car built by Dan Gurney's Anglo American Racers team and driven by Dan Gurney and others for four seasons starting in 1966. In winning the Belgian Grand Prix in 1967 Dan Gurney became only the second driver (after Jack Brabham) to win a Formula One Grand Prix in a car of their own construction. It's also the only Formula one victory for a USA-built car. Thanks to Wikipedia for confirming those details.
The Eagle at the Coys International Historic Festival at Silverstone, July 2000. Entrant Ben Liebert.
Ben Liebert leaving the pits on a practice run at the Silverstone Historic Festival meeting, August 2001.