Keith Johnson of Ottawa, Ill., says he purchased the poster as a teenager for a few dollars in 1968 or 1969. Dallas-based Heritage Auctions sold it Saturday for $262,900 to an anonymous bidder. Heritage says it's the largest bid ever recorded for an insert poster, which were designed for movie theater display cases.
The previous record was a $191,200 bid last year for a "Casablanca" poster.
"Frankenstein" featured actor Boris Karloff as the monster.
Johnson's wife Julie says the couple over the decades would occasionally pour themselves a glass of wine and take a look at the poster.
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