Switzerland
swi-19610220-c1-004
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Stamp picture
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Mint sheet for
Stamp number
Number of stamps
25

Issue date: February 20, 1961
Width: 210 mm
Height: 146 mm

Location: Oversize album #10

This is a type "D" mint sheet. Look in the lower right hand corner of the selvage.

From Linn's "Stamp Issuing Entities Of The World" page.

Switzerland (1850-)
Stamp-issuing status: active; Population: 7,248,984 (1997 estimate). A land-locked federation in central Europe, situated between France, Germany, Austria and Italy. The country has three official languages: German, French and Italian.

In addition from Wikepedia
Romansh has been recognized as a national language of Switzerland since 1938, and as an official language in correspondence with Romansh-speaking citizens since 1996, along with German, French, and Italian.