1893年8月24日瑞士寄镇江胜家剖开封,贴瑞士25仙票,销Baden日戳,旁有另一枚相同日戳,在封背有由星架坡到香港(9月19日戳),蓝色上海工部中转戳,10月1月镇江海关到达日戳. 之后此信又经加拿大-太平洋航路寄回瑞士,并于封背加贴小龙一分,叁分及伍分各一,销镇江10月5日镇江海关戳,10月6日上海海关戳,及10月6日上海德国客邮戳,到最后在11月2日递送回到Baden. 这信封十分重要及罕有,因它经上海德国客邮局转寄回欧洲,却未曾加贴任何德国邮票.。1885-88 Small Dragon Issues,Covers,International 9 candareen RateGerman Post Office,1893 (24 Aug.) opened-out <I>Singer, envelope to Chinkinag bearing Switzerland 25c. tied by Baden c.d.s. with a second strike alongside and, on the reverse, Singapore to Hong Kong (19.9), blue Shanghai Local Post and Customs Chinkiang arrival (1.10). The envelope the readdressed back to Charles Singer in Baden "<I>Per Canadian-Pacific Mail", with 1ca. green, 3ca. mauve and 5ca. olive-ochre tied by Customs Chinkiang c.d.s. (5.10) with Customs Shanghai (6.10) and German Post Office Shanghai (6.10) finally with Baden arrival (2.11). A fine and important cover which had been returned through the German Post Office but without the addition of any German stamp. Photo