|Note_en=Advertising for the [[Duofold]] model in the pen/pencil combination called ''"Duette"'', presents the three "Over-size", ''"Jr."'' and ''"Lady"'' sizes. Mention the black and red color combination as registered trademark. | |Note_en=Advertising for the [[Duofold]] model in the pen/pencil combination called ''"Duette"'', presents the three "Over-size", ''"Jr."'' and ''"Lady"'' sizes. Mention the black and red color combination as registered trademark. |