[[Image:Pli-glass.jpg|thumb|Riferimento al serbatoio in ''Pli-glass'' in [[:File:1950-Parker-51-Signet.jpg|una pubblicità]] ]] | [[Image:Pli-glass.jpg|thumb|Riferimento al serbatoio in ''Pli-glass'' in [[:File:1950-Parker-51-Signet.jpg|una pubblicità]] ]] |