ZR1 Cam Cover Plaque?

[Smoknc6z06]

A customer brought this in to our shop. It is a LT5 cam cover signed by all of the team in Stillwater. Does anyone know anything about this as far as what event, value, etc. One guy thought it might have been a raffle prize at the Stillwater event in 1993. Believe it or not, his Mustang buddy gave it to him because he has a Corvette. Thanks in advance for any input.
Terry

 

[93Rubie]

I don't know what it might be worth, but it is worth whatever someone is willing to pay for it.

Definitely a neat piece and one I would not get rid of. How many people can say they got a LT5 valve cover signed by Dave McCellan. ( I know I butched his last name.)