5 Marks - Güstrow Kriegsgefangenenlager IX A.K.

Güstrow's POW camp operated under the IX Army Corps and housed Allied prisoners during the later war years, issuing its own internal scrip to prevent German currency from circulating inside the wire. These Lagergeld notes were a near-universal administrative solution across German camps — but the IX A.K. series is among the more consistently documented, with denominations that suggest a functioning internal economy rather than purely symbolic issue.

Paper camp money of this period is vulnerable to heavy fold damage from pocket storage; the 5 Mark denomination would have seen the most transactional use.