It's a complete booklet of 50 Denmark airmail labels. The booklet has 25 pages plus a nice cardboard backing. Each page has two attached labels, with one label being small and the other label being quite large. Each page measures 40 by 115mm. These labels were used for parcels.
Year: February 1957, Gummed. Günter Mair's catalogue no: - DNK-A-12a/b.