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== Dettagli == {{AdsInfo |Marca=Hardtmuth |Data=1912-10-12 |Paese=UK |Giornale=The Illustrated London News |Volume=CXLI |Numero=3834 |Pagina=553 |Source=https://archive.org/details/sim_illustrated-london-news_1912-10-12_141_3834/page/n28/mode/1up |Creatore=Internet Archive: https://archive.org/details/internetarchivebooks |Datazione=archive |Licenza=PD-exp |Nome=L. & C. Hardtmuth. |Sede=Koh-i-noor House, Kingsway, London |Note_it=Pubblicità per una matita Koh-i-Noor. |Note_en=Advertising...