1 Oct 1871 to 31 Jun 1875, North German Union Agreement

Amount due for unpaid letters: 72 öre
Part payment credited at 4 öre per cent.
Postage due paid in cash befrore 1 Jan 1874, then by postage due stamps.

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Direct steamer to Germany. Double rate letter with 10 cent

Closed mail via England. Letter with 3 cent.