To realize an antifalsifying formed body, which can easily achieve antifalsification and, at the same time, fully exhibits antifalsifying effects.

This antifalsifying formed body 1 has a surface 1a as a first side and a back 1b as a second side incorporating the two sides in one. On the surface 1a, a plurality of first unit surfaces 2, each having a first diagrammatic element 3 expressed therein, are regularly formed in lines. On the back 1b, a plurality of second unit surfaces 12 are regularly formed in lines. On the second unit surfaces 12, antifalsifying pattern elements 17a and 18b are formed in all the or some part of second diagrammatic elements 13, between which and the first diagrammatic elements 3 expressed on the surface 1a a mirror image relationship is made up, and in all the or some part of the remaining portions except the second diagrammatic elements 13.

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