|Note_en=from the known dates of other references to the same objects (see [https://forum.fountainpen.it/viewtopic.php?p=329861 this presentation]). Advertising for some desk pens set. | |Note_en=from the known dates of other references to the same objects (see [https://forum.fountainpen.it/viewtopic.php?p=329861 this presentation]). Advertising for some desk pens set. |