Finland - naval jack

White bordered banner of arms of Finland. The border is 21% of the hoist, i.e. construction details are: (21+58+21):(21+58+21).
Željko Heimer, 17 October 2004

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The present jack has actually been in use since the 1930's.

According to Kari K. Laurla: "Suomalainen päällikkyysmerkki, Collegium Heraldicum Fennicum, Vantaa 1986", the jack was adopted at the same time as the rank flags were changed, i.e. on the 18th August, 1938.
Marco Pribilla, 30 August and 23 September 2001

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The Flaggenbuch (1939) [neu39] construction shows the two squares as 51 within 88 ((37+102+37):(37+102+37)) - while Album des pavillions gives 58 within 100 that makes difference less the 1%. There may be a further difference in the artistic representation of the coat of arms.
Željko Heimer, 21 October 2004