A 22-page micro-print of Shiki no Kusabana (flowers of seasons) is officially the smallest book in the world, measuring  0.75 millimetres (0.03 inches) or just about impossible to read with the naked eye. The book was printed by Toppan Printing in Japan, who have been making micro books since 1964, using its ultrafine printing technology, the same method used to avoid forgery of paper currency.

Previously, the record holder for smallest book belong to a 1996 micro-edition of Chekhov’s short story, “Chameleon.” The flowers of seasons book is currently on display at Toppan’s Printing Museum in Tokyo, and is on sale, together with a magnifying glass and a larger copy, for 29,400 yen (£205).

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