"Round silver colored button with Kriegsmarine symbol in the center and small loop on the back for thread"@en . "irn157314" . "overall: | Diameter: 0.880 inches (2.235 cm)"@en . "Kriegsmarine uniform button"@en . . . "No restrictions on use"@en . . . . . "Acquired by PFC David F. Busch, while serving as a soldier in the United States Army in Europe."@en . "No restrictions on access"@en . . "The button was donated to the United States Holocaust Memorial Museum in 2014 by Tara Barenok, the great-niece of David F. Busch."@en .