|Note_en=Advertising for the [[Duofold]] (red) and [[Black-tipped Jade]] (jade green) models in their different sizes with their mechanical pencils. It's from the catalog of one of the leading wholesalers of hardware in the United States. {{OnBack|File:1927-Parker-Duofold-HibbardCatalog-Rear.jpg}} | |Note_en=Advertising for the [[Duofold]] (red) and [[Black-tipped Jade]] (jade green) models in their different sizes with their mechanical pencils. It's from the catalog of one of the leading wholesalers of hardware in the United States. {{OnBack|File:1927-Parker-Duofold-HibbardCatalog-Rear.jpg}} |