兑换券 meaning in English

coupons=trading stamps
fec
foreign exchange certificate

Do you accept foreign exchange certificate
你们接受外汇券兑换券吗？
How much in foreign exchange certificate can i get for a fifty - pound note
一张五十镑钞票可以兑换多少兑换券？
Premiums , coupons and trading stamps
赠品和兑换券
E : how much in foreign exchange certificate can i get for a fifty - pound note
一张五十镑钞票可以兑换多少兑换券？
Bank note duty
兑换券发行税

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