Rare original double-sided British screening sheet for the 1971 sci-fi film "One Hour to Doomsday" from
Producer Irwin Allen. Film was originally shown in the U.S. on television as "City Beneath the Sea" and
was released theatrically in the UK. Starting actors, Stuart Whitman, Robert Wagner, Richard Basehart,
Rosemary Forsyth, and Robert Colbert.