Auto Racing autograph question
 

I have an opportunity to purchase an 8x10 photo autographed by the 1st auto racer I followed as a kid .
It’s a Mark Donahue autographed 8x10 .
I can’t find any references to its value .
Can anyone give me an estimate as to its value ?
Donahue died in 1975 at age 38 and won the Indy 500 in 1972 .
Thanks

:Value is what you are willing to pay. Most race drivers are prolific signers not to mention all the public signings they do. I saw past listings on Ebay go for around 200-250, and try spelling it in search Donohue might help you as well.:D:D