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On the back of the banknotes there are designs printed with fluorescent ink, which glow when placed against ultraviolet light (also known as “black light”). In particular, the flourescense feature in the current 50-peso (Type F1) and in the 100-peso banknote commemorating the 1917 Constitution is composed of two colors.

20F fluorescencia rev 50F1 fluorescencia rev 50F fluorescencia rev
20 pesos, F 50 pesos, F1 50 pesos, F
100F fluorescencia rev 100FconmConst fluorescencia anv 100FconmRevol fluorescencia rev
100 pesos, F

100 pesos, commemorative
of the 1917 Constitution, F

100 pesos, commemorative of the
beginning of the
Mexican Revolution, F
200F fluorescencia rev 200Fconm fluorescencia rev
200 pesos, F 200 pesos, commemorative of the beginning of
Mexico's War of Independence, F
500F fluorescencia rev 1000F fluorescencia rev
500 pesos, F 1000 pesos, F


Cotton paper banknotes they have color fibers on both sides—that is, tiny fibers embedded in the paper and distributed randomly. These fibers are fluorescent and can only be seen under black light.

When placing the obverse side of 100-peso, 200-peso, 500-peso and 1000-peso banknotes under UV-A light, the 3D-thread shines.

100F fluorescencia anv 200F fluorescencia anv
100 pesos, F 200 pesos, F
500F fluorescencia anv 1000F fluorescencia anv
500 pesos, F 1000 pesos, F


In the 100-peso banknotes commemorating de 1917 Constitution there are some figures that shine on the zipper-effect thread.

100conmConst fluorescencia anv    100conmConst fluorescencia en hilo