1906 saw the continued production of famous standard superheated steam locomotive classes by Garbe in the Linke-Hofmann locomotive factory in Breslau for the Prussian state railways. 584 of S6/PKP class Pd5 were produced, of which 82 units were operated by "Polish State Railways (PKP)". Approximately 4000 of P8/PKP class Ok1 were produced, of which 257 were operated by PKP before World War II, and 429 after the war. One of these, Ok1-359, is currently preserved in working order at the Wolsztyn museum.