Cased Japanese Navy Mine Laying 1st Class Badge
From the excellent website "Imperial Japan Medals and Badges" dot com: "This badge was mainly awarded to commanders of Mine Operation Units, Mine Layer Units, and Mine Sweeping Units. There were three stages of the testing and all three had to be passed before this badge was awarded. The tests were Mining Drills, Mining in Battle, and Mining Research." The badge is in excellent condition with fine enamel and dark, uncleaned patina. It is contained within its fitted, titled leather case, which shows expected signs of age and wear.
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