A limited edition is a series of prints which are limited to a one-time printing of a certain number of pieces. The artist typically signs and numbers each print.
Silkscreening, which was introduced around 1907, is also known as serigraph printing. During the process, a stencil of an image is placed on a taut screen with paper underneath. Ink is then spread on top and forced through the screen onto the paper with a squeegee. Unlike photo-offset, silkscreens (serigraphs) allow the artist to vary the colours and patterns while printing. A different screen is used for each colour in the print, and this results in a print with great colour density and many qualities of the original piece in terms of colour saturation.