Before restoration coin had green patina on it's surface (right image) and there was golden covering (41 kb) above patina. This later covering was easily removed by distilled water. Agressive green patina was removed by special methods and now we can see old golden covering in some places of the coin.

  • Golden covering near character Ch'ing (65 kb)
  • Golden covering near character T'ien (86 kb)
  • Golden covering on the reverse (57 kb)
  • Golden covering on the reverse (85 kb)
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