Teranishi Chemical Industry was founded in 1919 in Osaka. In 1931 it started making fountain pen ink that eventually carried the brand name “Guitar” or “Guitar Mark”. However, the main product of the company is the oil-based marker “Magic Ink”, very popular in Japan, and the fountain pen ink disappeared from the Teranishi catalog at some point after the War.
3mL ink samples contained in a plastic vial with an o-ring to ensure a proper seal.
