|Note_en=Advertising for the [[Duofold]] ''Deluxe'' models in [[celluloid]] (called [[Permanite]]). Promoving the ''[[Advertised Feature::Pressureless Touch]]'' feature (writing without pressing) as [[Parker improvements|47-th improvement]]. | |Note_en=Advertising for the [[Duofold]] ''Deluxe'' models in [[celluloid]] (called [[Permanite]]). Promoving the ''[[Advertised Feature::Pressureless Touch]]'' feature (writing without pressing) as [[Parker improvements|47-th improvement]]. |