民国七年中国银行背面彩色试印样票,包括一圆、伍圆,张家口地名,拾圆2枚,张家口及浙江地名,伍圆常见為棕版,拾圆浙江地名常见為棕版,拾圆贴在纸卡上,有处理过痕跡,大致AU,罕见背面试印样票。Bank of China, a group of reverse colour trial proofs, 1918, including 1, 5, 10 yuan Kalgan, 10 yuan Chekiang, 5 yuan usual specimen in brown, 10 yuan Chekiang usual specimen in brown,(Pick 51rp, 52rp, 53rp), 10 yuan mounted on card, some handling, generally about uncirculated, scarce reverse colour trial proofs (4)