Also on the window envelope. according to the latest rules of the Post
Office for business addresses and advertising, only the left-hand third of
the front may be used. and the back. where not less than 2'/, em on the top
must be left clear. About 3 em is recommended to be left clear along the
top on the front. on all sizes. to avoid a postmark obliterating any type.
Stamps (including franking) should be incorporated in the typographic
design. since the receiver usually receives franked envelopes.I
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11.1
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HERBERT BAYER: Standard window envelope (reduced). White paper. Printing in
black and red. Format C6, DIN 680.
THE POSTCARD
A standard for postcards has been withdrawn. because the Ministry for
Posts raised an objection. A new standard is in preparation.
The standard for postcard sizes is 01 N A6 (1 05x148 mm). the largest per
missible in Germany and also the standard world size. Postcards in A6 can
therefore be sent to any country.