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Line drawing of an optical illusion: an old man with a beard on a unicycle forms a grandfather clock when inverted.

Line drawing of an optical illusion: an old man with a beard on a unicycle forms a grandfather clock when inverted.

reversible figure optical illusion sketch that looks like an old man riding a unicycle and a grandfather clock when turned upside down Mehr sehen

#optical illusion #illustration #clocks #sketch

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