Danish stamps (kl1-kl6) was used in Schleswig-Holstein and Lauenburg from 1851 until March 1864, when they were replaced by stamps issued for use in Schleswig, Holstein and Lauenburg.

Danish stamps used in Schlewig-Holstein can be recognised by the cancellation. Below are 3 illustrations of letters used in the part of Schleswig-Holstein that today is a part of Germany. Prices of stamps cancelled in Schleswig-Holstein and letters from the same area and periode vary from prices close to the one given in frimindeks to very high prices.

The three letters below were brought on internet auctions in 2007 - the 4 RBS was sold at close to 25 € and the two 4 skilling were sold at prices near 10 € for one letter.