Werk-Ausweis for Pole working at the Warsaw company of H. Liefeldt and S. Schiffner GmbH.
I believe this style of laminated ID was introduced in Warsaw due to the large number of forged ID documents produced by the Polish resistance that were in circulation. It was hoped the embossed laminated IDs would be that much harder to forge than the previous printed card documents.
The last date stamp on the card is July 1944 so just before the Warsaw Rising of August 1944 so maybe the factory stopped operation from then on.
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Henryk Liefeldt was born in 1894, Warsaw, and died September 13, 1937. Liefeldt was a mechanical engineer, designer and well known race car driver before the First World War. After WWI Liefeldt started the Warsaw Engine Manufacturing Plant and Mechanical Workshops (Warszawie Wytwórnię Silników i Warsztaty Mechaniczne) Henry Liefeldt - Stefan Schiffner. In 1930 Liefeldt won the Grand Prix Lwow in a Austro Daimler ADR. Liefeldt H. and S. Schiffner company produced industrial engines, motor pumps etc. and was for several years the only representative of the Austro-Daimler in Poland.
Henryk Liefeldt in his Austro-Daimler - Grand Prix Lwow 1930
The 1930's—The greatest period of motor racing!!