During World War I, the British counterfeited three Austro-Hungarian stamps of the Crown & Kaiser designs.
In approximately September 1918, the British printed forgeries of two German stamps of the Germania design.
During WWI, the British printed forgeries of three stamps of the Bayern King Ludwig design.
Shown below are the stamps of the GermanStamps.net Collection on the physical album pages.
During WWI, the British counterfeited stamps of Germany and Bavaria as part of a large propaganda campaign.