The Atjeh star is a Japanese occupation overprint applied to postage stamps and postal stationery in the residency of Atjeh. The star was the symbol of the Japanese army, and within it is depicted the katakana character A which stands for Atjeh. There were several types of star overprints which were applied mostly in violet, but also exist in red and brown. It was applied from roughly May 1942 through the end of 1943.