old travel pen travel pen brand Go Product made in West Germany years 70 probably intended for women, could be slipped into a purse given its small size by unscrewing the case the pen unfolds with a spring system folded dimensions 5.5 cm unfolded 9 cm does not write, I do not know if it works with loose ink or a specific cartridge. the brass lead unscrews see photos in good general condition, the original paint is worn in places see photos shipping by tracked letter Condition: Used Item having been worn. any imperfections. Brand: Go product