Double reverse Ching 10 cash coin

Mar.31, 1998
Unusual double reverse coin.
Diameter 36.9 mm, weight 21.9 g
Obverse and reverse, metal and style of coin are very close to usual coins of Hsien Feng period of the Ching dynasty.
Hsien Feng Chung Pao, 10 cash, Board of Revenue.
Diameter 37.3 mm, weight 20.1 g

Any additional information highly appreciated. Please send it to Vladimir Belyaev

Chinese Coinage Web Site