10 Groszy Oflag II-D

Oflag II-D was a German prisoner-of-war camp for Polish officers located at Gross Born (now Borne Sulinowo) in Pomerania. Camp scrip of this type was introduced to prevent prisoners from accumulating Reichsmarks — and by extension, meaningful escape funds. The "Bank Obozu" designation was nominal; there was no banking infrastructure, only a controlled internal economy designed to keep currency usefulness confined to the wire.

The hand-stamp security feature is the entire authentication mechanism — no plate printing, no serial numbering. Forgery within the camp was reportedly attempted regardless.