|Note_en=for similar advertisement of the same models. Advertising for some eydropper ''[[overfeed]]'' models named ''[[Swan Pen]]'', showing numbers [[Swan Pen 4662|4662]], [[Swan Pen 4562|4562]] and [[Swan Pen 3012|3012]]. | |Note_en=for similar advertisement of the same models. Advertising for some eydropper ''[[overfeed]]'' models named ''[[Swan Pen]]'', showing numbers [[Swan Pen 4662|4662]], [[Swan Pen 4562|4562]] and [[Swan Pen 3012|3012]]. |