In 1899, a German stamp dealer named Philipp Kossack supplied the Imperial German Postal Museum with a large collection of Schleswig-Holstein stamp varieties which the Museum had sought for the national stamp collection.
In return for his valuable contribution for the Museum, Kossack asked for a large quantity of the previous Marshall Island overprint issues. These were about to increase greatly in value, as the stamps overprinted “Marschall Inseln” were being phased out in favor of new issues overprinted with the new spelling, “Marshall Inseln.”
An unknown number of these reprints eventually made it to Jaluit. Of these, many were not canceled in the ordinary course of business, but rather in an attempt by stamp dealers and collectors to acquire a Jaluit-canceled variety. For example, Kossack himself had at least 150 sets of the reprints attached to self-addressed covers, which were canceled in Jaluit for mailing back to him in Berlin.
The 3 Pf and 25 Pf values can be found with plate flaws.
The Berlin reprints are difficult to distinguish from the 1897 Overprints, with only slight variations in color, paper, and gum.