This thread is part of the paper from the time of its manufacture. It has figures on third dimension which correspond to snails. These figures move in crossed sense with respect to the turn of the banknote; if the banknote is moved to the sides, the figures moved up and down; if the banknote is moved up and down, the figures move toward the sides. The 3D-thread is red in the 100-peso banknote, green in the 200-peso banknote, brown in the 500-peso banknote, and violet in the 1000-peso.

3D-thread in the 100-peso banknote	3D-thread in the 200-peso banknote	3D-thread in the 500-peso banknote	3D-thread in the 1000-peso banknote

Examination against the light

If you place the banknote against the light, you can see a band across it.