Prisoner identification badge

http://lod.ehri-project-test.eu/units/us-005578-irn90449-irn11711 an entity of type: RecordSet

The badge was donated to the United States Holocaust Memorial Museum in 1996 by Laib Opoczynski. 
irn11711 
Prisoner identification badge 
overall: Height: 4.000 inches (10.16 cm) | Width: 2.500 inches (6.35 cm) 
Badge worn by a slave laborer at Dora-Mittelbau concentration camp. 
No restrictions on access 
No restrictions on use 
Hexagonal, metal with gray enamel background,"Tf. in red enamel,"Halle 4" in blue enamel,"Moch" in black enamel. 

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