This amazing poster is from the 1951 film The Strange Door directed by Joseph Pevney, starring Charles Laughton, Boris Karloff, and Sally Forrest.
The evil Alain de Maletroit(Laughton) is enraged to hear that his brother Edmond de Maletroit has married his childhood love. As a result, Alain imprisons Edmund in a dungeon for 20 years. Alain then attempts to make Edmond's daughter, Blanche that her father was dead. Imprisoning two more unlucky souls, the three attempt to escape their stone tomb, before it is too late.
This is an American One-Sheet (1sh) poster, linen backed by the Affiche Poster Restoration company of Portland. Linen Backing is absolutely the best conservation method used to mount, and preserve any vintage poster so it is able be restored and framed without compromising value. All materials used in this mounting process are acid free and reversible with water.
The poster itself measures 27x41 inches and comes rolled mounted and centered on a sheet of canvas measuring 31x45 inches.