1999年中国人民银行第五版人民币一佰圆背面渐进式单色试印票，棕白二色，应為早期阶段的成品，2021年斯宾克曾售出相近橄欖绿色之试印票，本色调乃首次遇见，PMG 63EPQ，极罕见。People’s Bank of China, reverse progressive proof 100 yuan, 1999, 5th Series Renminbi, uniface, in brown and white,(Pick 901pp2), An early production stage proof to highlight details of the reverse design. A previous similar example in olive green was sold at Spink in 2021. The colour type previously unseen. PMG 63EPQ Choice Uncirculated, rare and important
