pre-printed text

Security Element:

latent image

Technique:

intaglio printing

Description:

"LTU"

Security Element:

OVI (optically variable ink)

Description:

when document is tilted, colour changes from magenta (purple) to green, and from green to purple

Security Element:

rainbow colouring

Technique:

intaglio printing

Technique:

intaglio printing

Security Element:

guilloches / fine line patterns