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
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