Following the Reichspost’s selection of the design for the Yacht Issues, several blocks of 16 were printed as proofs. The proofs are in a face value (2 Pf.) and color that were not used on the final, released issues.
These album pages show the postmarks of Karolinen.
Shown below are the stamps of the GermanStamps.net Collection on the physical album pages.
As with most of the German Colonies, the Karolinen postage consisted of overprints of German issues, followed by versions of the Yacht Issues.
The 1917 postal stationery are similar to other Yacht designs, but feature a vertical line down the middle of the card, with text in German and French.
In 1901, Karolinen began using postal stationery of the new design depicting Kaiser Wilhelm II’s yacht, the Hohenzollern II.