This is indeed a splendid set of travel documents comprising of three distinct ones. The main document is a German Reich passport issued at Hamburg in 1928 to a businessman who travelled to Far East. There are rare visas of  Netherlands East Indies (for Batavia), China (for Tientsin), Russia, Mongolia, United States as well transit visas of Singapore, Ceylon, Italy, Switzerland.
The second document is a Personalausweis issued at Hamburg in 1924 and the last one is a Sauf-Conduit (Passierschein) of 1924 of the same gentlemen.
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