Later , they altered the color and the guilloche of 1 yuan and 5 yuan . the black 1 yuan and brown 5 yuan were issued on 3 25 1961 and 4 20 1962 respectively . therefore the number of types in the second series of rmb increased from 11 to 16 后来，对1元券和5元券的图案花纹又分别进行了调整和更换颜色，于1961年3月25日和1962年4月20日分别发行了黑色1元券和棕色5元券，使第二套人民币的版别由开始公布的11种增加到16种。
2.
Later , they altered the color and the guilloche of 1 yuan and 5 yuan . the black 1 yuan and brown 5 yuan were issued on 325 1961 and 420 1962 respectively . therefore the number of types in the second series of rmb increased from 11 to 16 后来，对1元券和5元券的图案、花纹又分别进行了调整和更换颜色，于1961年3月25日和1962年4月20日分别发行了黑色1元券和棕色5元券，使第二套人民币的版别由开始公布的11种增加到16种。
