==Riferimenti esterni== * [https://www.penexchange.de/forum_en/viewtopic.php?t=6332] Articolo sulla storia del marchio * [http://www.fountainpennetwork.com/forum/index.php?showtopic=181229] Discussione su FPN * [http://www.penpractice.com/page12.html] Articolo su uno specifico modello * [http://www.penhero.com/365_2010/365_011510.htm] Articolo su uno specifico modello <noinclude> ==Note== <references/> {{BrandData|MainBrand=Swan|ProdDate=1913|Country=UK}}