These stamps where printed in Austria,at the same epoch of the North Borneo stamps from which they were influenced.There exists also postal stationary with 5c & 15c.Postcards also exist pre-stamped .No data yet on the printers name nor the quantities...

The Island has luxuriant vegetation.Water that runs from the high mountains.Also large amounts of Guano from the many birds that populate the area.Potentially a rich island..