|Note_en= Also found on: N. 9 (1917-03-04) and N. 18 (1917-05-06). Advertising for the [[Parker Lucky Curve]] models with prices from n. 20 to n. 28 in different versions. | |Note_en= Also found on: N. 9 (1917-03-04) and N. 18 (1917-05-06). Advertising for the [[Parker Lucky Curve]] models with prices from n. 20 to n. 28 in different versions. |