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The most famous models, however, are those of the 50s, some clear imitation of the [[Sheaffer]] [[Triumph Pen|Triumph]] models, with [[nib conical]], tapering lines and  [[Crest]] style metal cap. The [[Pen-Co 53]] was the top model, widely publicized, so much to arouse the reaction of the [[Sheaffer]] Italian distributor.  

The most famous models, however, are those of the 50s, some clear imitation of the [[Sheaffer]] [[Triumph Pen|Triumph]] models, with [[nib conical]], tapering lines and  [[Crest]] style metal cap. The [[Pen-Co 53]] was the top model, widely publicized, so much to arouse the reaction of the [[Sheaffer]] Italian distributor.  

Ma oltre alla versione a pennino conico la [[Pen-Co]], per quanto assai meno comuni, e praticamente ignote fino poco tempo fa, la produsse anche delle varianti con l'ordinario pennino aperto, come del resto aveva fatto anche la [[Sheaffer]] con le varia [[Admiral]] o [[Sheaffer Saratoga|Saratoga]], come quella illustrata nella fotografia a fianco.

But in addition to the conical nib version, although much less common, and virtually unknown until recently, [[Pen-Co]] also produced variants with ordinary open nib, like the one shown in the photo at left, as [[Sheaffer]] had done with [[Admiral]] or [[Sheaffer Saratoga|Saratoga]].

[[File:Penco-AdmiralLike-Open.jpg|thumb|left|An open nib [[Pen-Co]]]]

[[File:Penco-AdmiralLike-Open.jpg|thumb|left|An open nib [[Pen-Co]]]]