Latent Image PEAK
PEAK – Printed and Embossed Anticopy Key
An image made by colorless embossing over a printed area on the banknote. The result is an optically variable element which is palpable. The latent image becomes visible under oblique light (fig. 1).
a
b
Fig. 1. Latent image PEAK. 20 Liberian Dollars (2003):
a – view at right angles; b – view under oblique light