One of only seven known to exist, an extremely rare Frankenstein 1931 poster is now up for grabs from Heritage Auctions, expected to exceed $150,000 when all is said and done.

At this time, the current high bid is already at $77,500!

The team explains, “Frankenstein was hiding in a Pennsylvania attic all along. This 1931 Style A movie poster designed by the legendary Universal Pictures art director Karoly Grosz, that is, not the man nor the monster. There are only seven known surviving examples of this Frankenstein, and until this year, it was tucked away in the perpetual night beneath the eaves of a home in The Keystone State. And now it comes out to roar once more at Heritage Auctions.

“Indeed, this Frankenstein one-sheet, folded and unrestored but in near-mint condition nearly a century later, is a centerpiece of the auction house’s April 29-30 Movie Posters Signature® Auction. It is being...