"irn670969" . . "No restrictions on access"@en . . "overall: Height: 1.000 inches (2.54 cm) | Width: 0.812 inches (2.062 cm)"@en . . "The postage stamp was donated to the United States Holocaust Memorial Museum in 2018 by Jeffrey Hamburger."@en . . "German postage stamp"@en . . "No restrictions on use"@en . . . . . . "German postage stamp 20 marks"@en .