|Note_en=Published also on: N. 11 (1918-03-17). Generic brand advertising and list price per the [[Parker Lucky Curve]] models from n. 20 to n. 28 in different versions and for the [[Ivorine]] models. | |Note_en=Published also on: N. 11 (1918-03-17). Generic brand advertising and list price per the [[Parker Lucky Curve]] models from n. 20 to n. 28 in different versions and for the [[Ivorine]] models. |