Interesting find. This one is silvered over bronze and from an Olympics memorabilia auction in 2001:
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"Japanese Olympic 1932 Trials in Korea for Los Angeles Medal. Silvered AE, 33mm, by F.S. Athlete with Olympic shield, building in background. Rev. Japanese legend over "1932". Korea was occupied by Japan at that time - hence the Japanese legend. Koreans were competing under Japan's flag. With ball loop and ring, and yellow-white-yellow ribbon (ltly. soiled, stained and frayed spot.) Medal EF. Interesting period document. ($175)"