満州国切手 勤労奉公法施行記念 1943年（昭和18）5月1日発行 1942年11月、太平洋戦争が一段と厳しくなり、更なる軍需物資供給のための人的資源が必要となったため、国民勤労奉公法が制定された。 これにより、国民勤労奉公局が設置され、兵役前の若年者も勤労義務を負った。 切手は、この法律施行を記念して、第4次普通切手に「勤労奉公」の文字が加刷された2額面2種の切手が発行された。 参考：ウイキペディア「満州国の歴史」2022.6.16
Commemorating the Enforcement of the Labor Service Law Issued on May 1, 1943 (Showa 18) In November 1942, the National Labor Service Law was enacted as the Pacific War became more severe and human resources were needed to supply more munitions. As a result, the National Labor Service Bureau was established, and young people before military service were also obliged to work. To commemorate the enforcement of this law, two types of stamps with two face values were issued, with the characters "Labor Service" printed on the fourth reguler stamp. Reference: Wikipedia "History of Manchuria" 6.16.2022