Modifiche

These first pens were followed by ''[[Flat top]]''  models, very similar to [[Parker]] [[Duofold]], also produced in two sizes and in black and colored celluloid. These pens are characterized by a rather large metal ring on the cap and the ''OLO'' logo engraved both on the body near the bottom of the pen and on the nib section. These models were created in parallel to the introduction of the [[Duplex]] for which can be considered the economic version.

These first pens were followed by ''[[Flat top]]''  models, very similar to [[Parker]] [[Duofold]], also produced in two sizes and in black and colored celluloid. These pens are characterized by a rather large metal ring on the cap and the ''OLO'' logo engraved both on the body near the bottom of the pen and on the nib section. These models were created in parallel to the introduction of the [[Duplex]] for which can be considered the economic version.

[[Image:Olo-Ringed-SR-Posted.jpg|thumb|left|A ringed celluloid ''Olo'']]

[[Image:Olo-Ringed-SR-Posted.jpg|thumb|left|A ringed celluloid [[Olo]] ]]

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