©Pat Ashforth & Steve Plummer 2019

©Pat Ashforth & Steve Plummer 2019

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These photos show what you see when you look straight at the knitting.

The illusion is based on a red chalk drawing by Leonard da Vinci. It is often referred to as a self-portrait but there is much dispute about this. It seems more likely that it is his father or grandfather. It is our most subtle illusion so far.

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Illusions page of the Order Form

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