Established on September 18, 1942 by Imperial Edict No. 652.
勤労顕功章 - Distinguished Diligent Labor Badge
Size 48.27 mm.
Weight 32.3 g.
勤労章 - Diligent Labor Badge
Size 30 mm.
Weight 14.5 g.
Type 1940 badge https://asiamedals.info/threads/seamans-diligence-badge-type-1940-from-the-ministry-of-communications-a-k-a-marine-golden-kite-no.26786/
Established on July 19, 1943 by Ministry of Communications Ordinance No. 102.
Original description.
1st variation "one screw construction...
Established on February 10, 1940 by Ministry of Communications Ordinance No. 4. Originally badge was named 顕功章 /Distinguished Service Badge or Meritorious Service Badge/.
In 1943 name (as well as design) was changed to 船員勤勞章 /Seaman's Diligence Badge or Seaman's Meritorious Achievement/...
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海の金鵄勲章
船員勤勞章
船員顯功章
遞信省章
遞信省船員勤勞章