WIFSTAVARFS A/B.

The funnel is reconstructed from a black-and-white photograph of Pehr Hellsén, so the W’s colour is guessed. It appears lighter than the black top, as does the hull. Later photographs after return to Wirén as Eon show a black hull in July 1967 and red by the late 1970s. Rosanoski considers a prior red-to-black-to-red sequence unlikely, but the comparison does not establish the letter colour.