Revealing my stupidity:
In 1991, I traded and ungraded T206 Walter Johnson portrait that was in great shape for a 1970 Nolan Ryan which I then had graded by PSA - 6.
Ouch!
In my defense, at the time of the sale, the 1970 Ryan was at its highest value and the Johnson, while probably higher even then, was not near its current value. But still...I should have been slapped.
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