Impossible to find vintage ballpoint pen signature on the verso of a 4x7-inch envelope with a printed address to the Screen Actors Guild, confirming a ballot he enclosed inside for some unknown vote, dating to the 1950s. In good condition. Note that the image of the star shown alongside the scan of the autograph here is not included with the item. Familar-faced Russian-born character actor Michael Mark's over 150 classic film credits included a number of roles in horror, sci-fi and fantasy favorites. He was unforgettable in Frankenstein (1931), Mad Love (1935), Son of Frankenstein (1939), Ghost of Frankenstein (1942), House of Frankenstein (1944), Phantom from Space (1953), Attack of the Puppet People (1958), The Wasp Woman (1959), and Return of the Fly (1959). This is just the third example of his signature we have encountered in 30 years.