Line perforation comprises several steps: the sheet of stamps is first perforated horizontally, then vertically, until the whole sheet is perforated. This is an imprecise process, meaning it can result in lines and gaps of different sizes. You can recognize a line perforated stamp by the fact, that the corner teeth look different. Today’s stamp shows a block of four from Iceland (1941) depicting a cod. The stamps are line perforated 14 on all sides. Please note the irregular teeth in the corners of the stamps. CV is €200