Modifiche

|Note_en=Published also on: N. 52 (1928-12-09); year LVI, N. 48 (1929-12-01). Advertising for the [[Duofold]] model for being capable to write whitout pressure (a reference to the ''[[Pressureless Touch]]'' of the contemporary American advertising), for being unbreakable and lighter because of ''[[Permanite]]'', the button filler and the 25 year warranty on the nib; lists the colors.

|Note_en=Published also on: N. 52 (1928-12-09); year LVI, N. 48 (1929-12-01). Advertising for the [[Duofold]] model for being capable to write whitout pressure (a reference to the ''[[Pressureless Touch]]'' of the contemporary American advertising), for being unbreakable and lighter because of ''[[Permanite]]'', the button filler and the 25 year warranty on the nib; lists the colors.

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