Sp!n Exclamation Mark spinning top optical illusion by +d.

When this plastic top is spinning all you see is an exclamation mark, the top of which is floating in space, surrounded by a hoop. The illustrations will clarify how the ingenious top is designed. Made in Japan by h concept. Designed by Jordi López Aguiló.

Details

Size Outer diameter of ring is 65mm.
Date Purchased new in 2021.
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Ref no N2586