VINTAGE THE BLACK HOLE SHREDDIES CEREAL SPACE SIGNALLER 1979. SEALED GREEN.This is one of the Space Signallers from the 1979 Walt Disney film "The Black Hole" found in a box of Shreddies cereal in Canada. What are they? They are a thin, square-shaped morse code signaller that, when you press down on the top, a picture appears of a character through the slots. Character is V.I.N.CENT. A very rare collectible.