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Diamine Graphite is a dark grey fountain pen ink with low shading and low black sheen
Expertly crafted
which contains cobalt chloride
Highly elastic
Ho Ho Ho Country of Origin
Retro 1951 - Nikola Tesla A4+ Diamine Graphite is a darkNikola Tesla Futurist, inventor, electrical and mechanical engineer, Nikola Tesla was a genius well ahead of his time. His inventions are still being used to this day and his theories were so advanced that they continue to be studied, experimented on and even power the modern world. This Tornado's design was inspired by Tesla's spiral coil used in his wireless power experiments. Concentric circles are acid etched into the barrel then plated in copper