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In 1938, following the trend introduced by the [[Vacumatic]] of ''visualated pens'' showing the ink level, [[Aurora]] introduced the [[Optima]] model, a [[plunger filler]] made of transparent celluloid, which remained in production until the early '40s. Another model of the same year was the [[Topolino]], a simple [[button filler]] entitled to the Disney character, featuring a Mickey Mouse engraving, and oriented to youth people and students, soon paired with [[Topolino|Biancaneve]]. From the same period should be noted the [[Iridia]] model and the [[ML]] line introduced in 1938, produced, at least officially, for the armed forces officers.

In [[1938]], following the trend introduced by the [[Vacumatic]] of ''visualated pens'' showing the ink level, [[Aurora]] introduced the [[Optima]] model, a [[plunger filler]] made of transparent celluloid, which remained in production until the early '40s. Another model of the same year was the [[Topolino]], a simple [[button filler]] entitled to the Disney character, featuring a Mickey Mouse engraving, and oriented to youth people and students, soon paired with [[Biancaneve]]. From the same period should be noted the [[Iridia]] model and the [[ML]] line introduced in [[1938]], produced, at least officially, for the armed forces officers.