We're analyzing the STABILO logo, from Schwan-STABILO, a leading German pencil manufacturer since 1855. They've revolutionized the industry with inventions like the "permanent pencil" in 1875 and the STABILO BOSS highlighter in 1971.
I've used their pens and markers since childhood and still use them for logo and typography design sketches :)
Do you have any STABILO pens or markers at home? :)