In "Godloibarwa Polski Samorzadowej" published by the Instytut
Wzornictwa Prezwmyslowego in 1998, Koszalin is shown as W over B- and
the flag was adopted 1959.
The Flag Bulletin, Vol VI, Nº 1-2 (Winter 1966-67), pg. 56 states:
"Koszalin [pop. 52,000] A town since 1266 and the capital of a voyvody
since 1950. The first city flag, from the 19th century, was white over
red, containing the colors of the often changed coat of arms. In 1960 a
new coat of arms was adopted: on blue a silver horseman holding a shield
with the Polish eagle and a banner with the Pomeranian griffin. The new
city flag is of white over light blue horizontal stripes."
Dave Martucci, 12 Nov 1999
Koszalin: formerly a regional seat, now part of West Pomeranian region;
13 km from the Baltic, ca. 111.000 inhabitants. A town since 1246, it passed
in 1846 into the hands of Brandenburgia and then Prussia. Back in Poland
since WW2.
Gwidon S. Naskrent, 6 Sept 2000