50 KM - Issue 2002 FBiH RS Watermark Security thread See-through registar Optically variable ink Intaglio printing Latent number Watermark Security thread See-through registar Optically variable ink Intaglio printing Latent number Watermark Look at the banknote against the light (transmitted light). The watermark in stylish text: „CBBH“, in alternation of Latin and Cyrillic alphabets becomes visible in the marked area. Security thread Look at the banknote against the light (transmitted light). The black thread, without text, is visible in the marked area. See-through registar When the banknote is held up against the light, printed elements on the front side and the back side of the banknote fit together to form the shape of a rhombus. Optically variable ink The denomination number in the upper right corner of the front side of the banknote is printed with a special optically variable ink. When the banknote is tilted at a certain viewing angle, the color shifts from purple-red to greenish brown. Intaglio printing Intaglio printing is used on the front side of the banknote in the marked areas and can be felt with the fingertips. Latent number Tilt the banknote marked area until number 50 becomes visible within it.