copper coin

基本解釋

A:A one-cent copper coin could be exchanged for three copper coins.
A：當時一分銅可兌換三枚“銅板”。
He put a gourd bottle on the ground and covered its mouth with a copper coin.
他他把一個葫蘆瓶放在地上，并用一個銅板蓋在葫蘆的嘴上。
The farm keeper gave him half a copper coin in return on the cost of a muddy and a strange smell of his body.
當他付出了一身臭汗一身泥的代價之后，農場主賞了他半把銅板。

The three grammes of copper in the 1 rupee coin (we are talking about the older style, the Jinnah on one side, Badshahi Masjid on the other, a brown colour, not the newer silvery looking coin) therefore has a refined value of 2.64 US cents.
FORBES: The Pakistani 1 Rupee Coin Is Worth More Than 1 Rs
But a 20-30% discount on the copper value is reasonable enough thus making, at the refinery gate, a 1 rupee coin worth perhaps 2 cents or two rupees.
FORBES: The Pakistani 1 Rupee Coin Is Worth More Than 1 Rs
Up to 2500 rupees if you believe the rumours sweeping Pakistan that the humble coin had inadvertently been made with gold instead of the usual tiny percentage of copper.
FORBES: The Pakistani 1 Rupee Coin Is Worth More Than 1 Rs

銅元
The main clue of the transition of the currency system included the transition from the sycee system to the silver dollar system, from copper cash system to the copper coin system and the circulation of the new-typed paper currency.
晚清幣制變遷的主線是：銀兩制度向銀元制度的變遷，制錢制度向銅元制度的變遷，清末新型紙幣的發(fā)行流通也是晚清幣制變遷的一部分內容。
銅幣