This is Thom Richards' P-51:
https://www.mustangsmustangs.com/p-5...serial/87-4488
Gerry Beck's airframe was named 'Precious Metal II':
https://www.mustangsmustangs.com/p-5...erial/43-BeckA
There is another airframe with the 'Precious Metal' name but that is a restoration project as far as I can see:
https://www.mustangsmustangs.com/p-5...erial/44-73518