Found this old Sheaffer Lifetime Senior J8C Flat-Top Jade (I think that's what it is...) at my Grandma's place. Cleaned and filled with Shin-Ryoku ink by Iroshizuku : r/fountainpens
Amazon.com: Pelikan Edelstein Bottled Ink for Fountain Pens, Jade, 50ml, 1 Each (339374) : Office Products
Testing out the Pilot Iroshizuku 'Ama-Iro' ink with my Lamy Safari. : r/fountainpens