The watermark consists of thickening and thinning of the paper, which forms a pattern showing the same portrait as depicted in colour on the face of the note. If you hold the note up to the light, the watermark can be seen on the left-hand side of the face of the note. The watermark is also visible on the back of the note when you hold the note up to the light. On the new 100-krona and 500-krona banknotes, you can also see the denomination in the watermark. The denomination is lighter than the rest of the paper.
The security thread is inserted during the papermaking process. It is visible as a dark line when the note is held up to the light and can be felt as a slight ridge. On the 100-krona and 500-krona notes from 2001, the thread is wider and contains two types of legible texts, mini text that can be read without external aid and micro lettering that can be read with the aid of a magnifying glass.
The banknote paper is made from raw cotton. This gives the paper a special texture. The banknote paper is non-fluorescent; i.e. it does not reflect ultraviolet light. Other paper may show a blue sheen.
The foil strip on the new 100-krona and 500-krona notes contains a hologram (three-dimensional image) that shows the denomination and three crowns.
Shimmering gold colour can be found on the new 100-krona and 500-krona notes and shows the denomination and three crowns. The colour is known as mother-of-pearl and gives a slight, but clear hue when the paper is held at an angle. It is visible on the reverse of the note.
Hand-engraved portraits and etched denominations on the face of the notes,
as well as some other details, are reproduced in intaglio print. This gives a raised effect when printing - the surface feels slightly rough.
Micro letterings are inlaid in each denomination. They need to be enlarged considerably to be legible.
The banknote number is printed in black ink that fluoresces (lights up) yellowish-green under ultraviolet light. There are also different texts or patterns in fluorescent ink on both the face and reverse of the different denominations of banknote. In addition, there are fibres on the notes that can only be seen under ultraviolet light.
The see through picture is a pattern that can be found on the new 100-krona and 500-krona banknotes. The picture is on the face of the note, in the bottom left-hand corner, below the watermark. The pattern, together with the pattern on the reverse of the note, forms an image showing the denomination of the banknote when you hold the note up to the light.