Majohn C4 (Moonman) Fountain Pen TUZU Adjusted this ink changes color when

this ink changes color when exposed to sunlight

Using that experience

Swatch photos are from cultpens

Fountain Pen Type

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Majohn C4 (Moonman) Fountain Pen TUZU Adjusted this ink changes color whenBrand: Majohn Model: C4 Transparent Fountain Pen Type Capped Length: (150mm) Weight: (31g) Diameter: (14. 5mm) Nib: Extra Fine Nib (0. 38mm) ; Fine Nib (0. 5mm) ; Medium Nib (0. 7mm) *vacuum filler with box and dropper The pen body is made of organic glass (PMMA) by solid mechanical processing, and the inside and outside are polished with diamonds. The pen holder with large capacity stores ink and the dropper adds ink. It is equipped with a leak proof