The Coys International Historic Festival meeting at Silverstone in July 1999 included a display of BRM cars to celebrate the 50th anniversary of the marque. Included in the display were three of the original BRM V16 cars.
This is the original car, designated BRM Mk1 No. 1 or V16/01 and this is the one usually on show at the National Motor Museum at Beaulieu, The Mk1 is also known as the P15.
This is BRM Mk1 No. 3, or V16/03 and is the Donington Museum car. It was driven in the BRM demonstration run that day at Silverstone by José Froilán Gonzáles.
The third car on display was the BRM V16 Mk2 No. 1, or V16/04, which was then owned by Nick Mason and driven by him in the demonstration run. It is now owned by Bernie Ecclestone. The Mk2 was also known as the P30 and was a shorter and lighter version of the Mk1.
You can read the history of the V16 BRMs in this madasafish.com history of the car.