Clear Window
A transparent area of the polymer banknote created during the manufacturing process of the substrate, not covered with any coatings.
Classification
Depending on the design and security features:
- Simple clear window (fig. 1, a)
- With vignette (image, text, etc.) (fig. 1, b)
- With embossing
- With metallized covering (coating)
- With colour changing effect
- Combined (several effects)
a
b
Fig. 1. Clear window:
a – simple. 2 000 Chilean Pesos (2004); b – with vignette. 20 Brunei Dollars (2007)