If you look against the light at the 100-, 200-, 500- and 1000-peso banknotes, you can see a thread about one millimeter in width that crosses the note vertically. This thread is known as the security thread and is located almost immediately to the left of the bust-head figure.

	Security thread in 200-peso banknote

This thread is part of the paper from the time of its manufacture.

Examination against the light

To observe this security feature place the banknote against the light.