What's the Holy Grail of rare parts?

YBlock Nicson valve covers. I have never seen a set before

 

Original '54 Ford Crestline steering wheel, they have gotten pretty pricy in recent years. HRP

 

Is something that was produced in the millions ever gonna reach holy grail status? I thought the concept meant rare and desirable.

 

Wow, those Nicson valve covers are pretty rare as I've never seen anything like that. And I used to own a Nicson 2 by 2 intake for a small block chev.

 

1938 Cadillac LaSalle NOS grille.. Never installed ..

 

For me it was the Fenton valve covers to match the ones in the photos. The engine in my avatar went into the rail

 

1932 Ford Pines Winter Front grill.

 

Still looking for a low-deck (241/270) Dodge Red Ram Hemi 4-71 manifold.

The last two that I had a line on got sent to the scrapper by heirs that just wanted the house.