Bob, I remember that car well.  Back in '68 I watched it run a couple of times, at Brands and Silverstone (from memory).  Its model number was 'P68', and it was built and run by Alan Mann Racing in Surrey, UK if memory serves. Frank Gardner may have had a drive in it - usually a Falcon team here in the UK.  It was truly beautiful but deeply flawed.  The DFV motor did not translate well to sports cars from Formula 1.  I think the biggest issues were with severe vibration.  Beautiful nonetheless!
Roger

Hah!  I like the 'country of origin: United States' bit.  US parent company, maybe, that car's ours!  Cosworth were (and still are) 50 miles from me here.  As far as I know, the P68 never even visited the US, I'm afraid!