Tokyo, Dec. 12 (Jiji Press)--The price of a limited-time rice coupon to be sold to municipalities in Japan will go down from the usual 500 yen to a uniform 477 yen, the national federation of rice wholesalers' mutual aid cooperative associations said Friday. Costs related to the coupons were cut as much as possible in order to lower the sales price, said the federation, known as Zenbeihan, ...