Anyone reconize these valve covers?

[Paranoid]

Anyone recognize these valve covers?

I know they're from a BB, but what year? Are they from a Corvette, Chevelle, Nova etc.? They have drippers inside and looks like the factory flash chrome. There are plug wire holder at the base of each cover. These holders have what appears to be a black rubber coating on them.

The bottom cover is slanted in on the right hand side, much like the Corvette covers. Slanted to clear the PB master cylinder.

I can't remember where I got them. Worth anything? If not I was going to try to paint them Orange.

 

[1KULC7]

I had a 69 Yenko Camaro with a 427 and they look like the same ones that I had on it....Very very similiar.

 

[JohnZ]

I think they're probably aftermarket - have never seen any GM covers with the vinyl-dipped plug wire guides along the side like that.