AROSA schweiz suisse suiza svizzera switzerland FINE ETCHING by FERDINAND DÖRR German Painter-Etcher & Lithograph signed in plate signed in pencil FOLIO collection HELM&HELM sammlung PETER HELM CATALOGUES @peterhelm

https://www.polygraphicum.de @peterhelm https://twitter.com/PeterHelm12/status/1520428832314081280 <> AROSA schweiz suisse suiza svizzera switzerland <> FINE ETCHING by FERDINAND DÖRR German Painter-Etcher & Lithograph signed in plate signed in pencil FOLIO <> collection HELM&HELM sammlung <> PETER HELM CATALOGUES https://web.archive.org/web/20091116081143/http://www.polygraphicum.de/alpen.html

AROSA schweiz suisse suiza svizzera switzerland FINE ETCHING by FERDINAND DÖRR German Painter-Etcher & Lithograph signed in plate signed in pencil FOLIO collection HELM&HELM sammlung PETER HELM CATALOGUES <> https://twitter.com/PeterHelm12/status/1520428832314081280 @peterhelm <> AROSA polygraficum 1980-2022 polygraphicum docs Fine Etching.plate signed. pencil signed.Folio FERDINAND DÖRR Painter Etcher Lithograph https://web.archive.org/web/20091123230708/http://www.polygraphicum.de/heidelberg.html https://web.archive.org/web/20081102040916/http://www.polygraphicum.de/Neckartal.html illustrated catalogues online by peter helm since1980 schweiz suisse suiza svizzera switzerland <> https://web.archive.org/web/20091116081143/http://www.polygraphicum.de/alpen.html https://www.polygraphicum.de <>