"overall: Height: 4.500 inches (11.43 cm) | Diameter: 1.000 inches (2.54 cm)"@en . "No restrictions on access"@en . "irn676249" . "Nail from tunnels at Berga camp"@en . "No restrictions on use"@en . . . "Nail from the tunnels at Berga camp, part of a collection of materials that document Donald Hildenbrand’s experiences as one of the 350 American POWs selected from Stalag IXB and sent as a slave laborer at the Berga concentration camp."@en . . . . . "The nail was donated to the United States Holocaust Memorial Museum in 2018 by Bruce, Janice and Philip Hildenbrand, the children of Donald Hildenbrand."@en .