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Zipper-effect thread

This feature appears only in the 100-peso banknote commemorating the 1917 Constitution and is included in the cotton paper since its manufacture.

It has figures in small square blocks. The thread changes color, from green to gold, and the square blocks are joined together and then separated when the banknote is tilted forward and backward.  

When placing the banknote against the light, this thread appears unending.

100conmConst ubicación hilo cierre

100conmConst_hiloCierre1de3 100conmConst_hiloCierre2de3 100conmConst_hiloCierre3de3 100conmConst hilo efecto cierre (gif)