DENON Druckgraphik nach BARTOLOMMEO SCHIDONE Zeichnung In der Druckplatte links & mittig unten bezeichnet D.N.Sc. , Schidone [del.] TIB 386 L.F.256 artHELMkunst sites.google.com/site/arthelmkunst/recherche-research RECHERCHE RESEARCH cf. Helm Catalog DENON Oeuvre Gravé Online 2006 https://0700polygraf.blogspot.com/search?q=google1st+web+archive https://web.archive.org/web/20090731125423/http://www.polygraphicum.de/DOMINIQUE_VIVANT_DENON_CATALOGUE_EXPO_SALE_2006_2007_Index.html

DENON Druckgraphik nach BARTOLOMMEO SCHIDONE (Schedoni) Zeichnung https://web.archive.org/web/20091213174817/http://www.polygraphicum.de/Mezzotinto.html In der Druckplatte links & mittig unten bezeichnet D.N.Sc. , Schidone [del.] TIB 386 L.F.256 {ohne die Signatur D.N. Sc. und ohne die Ornament-Einfassung] artHELMkunst https://sites.google.com/site/arthelmkunst/recherche-research RECHERCHE RESEARCH cf. Helm Catalog DENON Oeuvre Gravé Online 2006 https://0700polygraf.blogspot.com/search?q=google1st+web+archive https://web.archive.org/web/20090731125423/http://www.polygraphicum.de/DOMINIQUE_VIVANT_DENON_CATALOGUE_EXPO_SALE_2006_2007_Index.html @peterhelm https://twitter.com/PeterHelm12/status/1565812999390220288