1898年5月18日宜昌寄上海付报刊邮费破剖封, 贴小字加盖洋银一分盖于一分票, 销宜昌大圆日戳, 封背盖5月26日上海工部日戳. 带闰月的邮戳非常罕见, 付2010年B.P.A.証书.China1897 New Currency SurchargesCovers1898 (18 May) opened-out printed paper rate envelope to Shanghai bearing Small Figures 1c. on 1ca. tied by a good strike of Ichang Dollar dater with Shanghai Local Post (26.5) c.d.s. on the reverse. A very scarce postmark, even more important as it shows the intercalary month. B.P.A. Certificate (2010). Photo