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Schjöth 1419, Hartill 5.25-27 (Hartill 5.25) Type A1.1, KM 311.1
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Kangxi (1662-1722)
1 cash, 1662-1683, Board of Revenue mint (in Beijing), 27 mm.
Cast Bronze (officially 60% copper and 40% zinc, but actually on average 67.4% copper, 21.9 % zinc, 7.0 % lead, 1.8 % tin, etc.), nominal weight 1.4 qian = 5.22 grams (but generally 4.2-5.0 grams).
Obv: Kangxi tongbao.
Rev: Boo Chiowan to the left and right.
Type A is comprised of coins with a seven stroke bei, two dot tong, and with a zigzag at the bottom of the tong radical. Those within subtype A1.1 are larger well-made coins with an actual weight of 4 grams or more and a diameter over 26 mm.
Hartill rarity 10
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