Production of the P 8 lasted from 1908 until 1928 and this locomotive was used on practically all European railway lines.

After the end of World War I, 192 Class P 8 engines were handed over as a reparation to Poland, including two machines for Free City of Danzig, where they were re-designated as Class Ok1 locomotives (numbers: Ok1-1 to Ok1-190 and Ok1-1Dz and 2Dz for Danzig machines).

[1] Since the class was considered successful, further 65 locomotives were built in Germany at Polish order in 1922-1923 (designated Ok1-201 to 265).

[1] A few engines were preserved, including Ok1-359 (see the photograph), which is stabled at the Wolsztyn museum.

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