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1981
12.09.2023
рhotocopying.
Latent image of the letters „РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on the decorative stripe.
1982
12.09.2023
area.
Latent image of the letters “РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters “РР” become visible on the decorative stripe.
1983
12.09.2023
рhotocopying.
Latent image of the letters „РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on the decorative stripe.
1984
12.09.2023
area.
Latent image of the letters “РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters “РР” become visible on the decorative stripe.
1985
12.09.2023
рhotocopying.
Latent image of the letters „РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on the decorative stripe.
1986
12.09.2023
area.
Latent image of the letters “РР” (kipp-effect)
When a banknote a viewed at an acute angle, letters “РР” become visible on the decorative stripe.
1987
12.09.2023
рhotocopying.
Latent image of the letters „РР (kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on the decorative stripe.
1988
12.09.2023
рhotocopying.
Latent image of the letters „РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on the decorative stripe.
1989
12.09.2023
colour.
Latent image of the letters „РР” (Kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on a decorative stripe.
1990
12.09.2023
рhotocopying.
Latent image of the letters „РР” (kipp-effect)
When a banknote is viewed at an acute angle, letters „РР” become visible on the decorative stripe.