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Grand Duchy of Posen 1815-1849, Posen Province 1849-1920 (Prussia, Germany)

Großherzogtum Posen, Provinz Posen

Grand Duchy of Posen 1815-1849, Posen Province 1849-1886
Posen Province 1886-1920

See also:

Posen-West Prussia Frontier Province 1920-1935 (Grenzmark Posen-Westpreussen)
Subnational Flags 1815-1918 (Prussia, Germany)
Subnational Flags 1919-1933 (Prussia, Germany)
Germany

Grand Duchy of Posen 1815-1849, Posen Province 1849-1886

Großherzogtum Posen, Provinz Posen

2:3
by Santiago Dotor
Flag abolished 9th November 1886

Red-white horizontal bicolor. In use 1815 to 1886.

Norman Martin, 20 January 1998

Grand Duchy of Poznan (semi-autonomous part of Prussia) had a flag horizontally red-white. In 1849 the Grand Duchy was renamed to Province of Poznan (German Provinz Posen) and the autonomy was suppressed.

Grzegorz Skrukwa, 6 April 2000

Posen Province 1886-1920

Provinz Posen

2:3
by Santiago Dotor
Flag adopted 9th November 1886, abolished 1920

White-black-white triband. Officially adopted 9 November 1886. Abandoned 1918.

Norman Martin, 20 January 1998

An article by Dr. Whitney Smith, Gwenn ha Du (black and white) in Ar Banniel, 1999, mentions "13. Prussia - Province of Posen (1896-1934). Horizontal white-black-white."

Ivan Sache, 2 August 1999

In 1886 the flag was changed by the Prussian authorities into horizontal white-black-white triband, because the former was far too similar to Polish. White-black-white triband was the official provincial flag till 1918.

Grzegorz Skrukwa, 6 April 2000