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Although it is classified, perhaps unjustly, among the primitive loading systems, in reality the ''safety filler'' has resisted on the market much longer than other filling systems created in later periods. In particular, in Europe there are mass-produced models that use it until the 20s and 30s. Because of its historical value, which sees it as substantially the first mechanical system dedicated to filling the pen, it continues to receive an undeniable interest from collectors, many of whom have a particular preference for [[safety]] pens.<noinclude>

Although it is classified, perhaps unjustly, among the primitive loading systems, in reality the ''safety filler'' has resisted on the market much longer than other filling systems created in later periods. In particular, in Europe there are mass-produced models that use it until after the war. Because of its historical value, which sees it as substantially the first mechanical system dedicated to filling the pen, it continues to receive an undeniable interest from collectors, many of whom have a particular preference for [[safety]] pens.<noinclude>

== Notes ==

== Notes ==

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