Modifiche

[[File:1952-12-Corona-Diaz-Order.jpg|thumb|left|upright|120px|Order for ''Corona di Mario Diaz''.]]

[[File:1952-12-Corona-Diaz-Order.jpg|thumb|left|upright|120px|Order for ''Corona di Mario Diaz''.]]

It is unclear whether there is any relationship with the ''Corona'' ({{Marchio|90853}}) trademark registered by Luigi Vigorelli in [[1945]]. The production, as evidenced by the order of [[1952]] shown in the figure at the side, went even after the war, but again it is not known until when the activity has continued.

It is unclear whether there is any relationship with the ''Corona'' ({{Marchio|90853}}) trademark registered by Luigi Vigorelli in 1945. The production, as evidenced by the order of 1952 shown in the figure at the side, went even after the war, but again it is not known until when the activity has continued.

The company produced good quality [[celluloid]] pens, featuring a ''Corona'' marked gold nib, with the brand name imprinted on the body, between two circles, in nineteenth-century characters. It's quite interesting, at least in the case of the sample in the figure, the decoration with rings alongside the inscription itself.

The company produced good quality [[celluloid]] pens, featuring a ''Corona'' marked gold nib, with the brand name imprinted on the body, between two circles, in nineteenth-century characters. It's quite interesting, at least in the case of the sample in the figure, the decoration with rings alongside the inscription itself.