Modifiche

Da finire.

Da finire.

Riferimenti: [http://www.richardspens.com/ref/profiles/ingersoll.htm], [https://www.fountainpennetwork.com/forum/topic/132529-charles-h-ingersoll/], [], [https://leadheadpencils.blogspot.com/2017/01/the-real-story-of-redipoint.html]

Riferimenti: [http://www.richardspens.com/ref/profiles/ingersoll.htm], [https://www.fountainpennetwork.com/forum/topic/132529-charles-h-ingersoll/], [https://www.peytonstreetpens.com/ingersoll-dollar-fountain-pen-twist-fill-oversized-orange-celluloid-flexible-fine-14k-nib-excellent-restored.html], [https://leadheadpencils.blogspot.com/2017/01/the-real-story-of-redipoint.html]

<noinclude>==Note==  

<noinclude>==Note==  

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