Penol 3K

In the mid-1930s, Penol introduced two faceted models, the 8K (for “kanter”, the Danish word for “edges”) and the smaller 3K. In 1937, the 3K was updated to have a flat topped-cap, which remained in production until about 1939. This is an example in the marbled green option.

This pen has Penol’s Aëro-filler mechanism, which combines the convenience of an ink window with the simplicity of a button filler. This is executed by extending the section with a transparent tube that acts as a connector between the section and the latex ink sac. When the section is mated with the barrel, the transparent portion aligns with a transparent portion at the top of the barrel, as shown in a post of another 3K, here.

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