Keywords: Piet Zwaanswijk wearing Order of Orange-Nassau and holding his own self-portrait etching plate.jpg en Piet Zwaanswijk wearing his orange and blue ribbon symbol of the Dutch Order of Orange-Nassau and holding his own self-portrait etching plate He gave a demonstration in the Haarlem Historical Museum 13 January 2013 on how Anton Heyboer made his etchings using a small shoe leather press and similar natural colors 2013-01-13 14 40 11 own Jane023 cc-zero Uploaded with UploadWizard Piet Zwaanswijk Museum Haarlem Anton Heyboer Etching |