10 Pfennigs - Wapienno Michael Lewy & Co

Wapienno was a limestone quarrying operation in the Bromberg district of West Prussia, an area that changed hands between Germany and Poland repeatedly across the early twentieth century. Industrial scrip of this type was issued by quarry and factory owners to pay workers in company currency, redeemable only at the company store — a practice that effectively tied wages to employer-controlled goods prices. Michael Lewy & Co issued in zinc almost certainly because wartime or postwar metal shortages made brass impractical.

The Hasselmann reference places this firmly within the documented corpus of West Prussian industrial notgeld.