60 Centimes dark grey-violet / cobalt with red overprint "MEMEL 3 Mark" and blue oblique overprint "Flugpost", with printing error II: "lower loop of the F in Flugpost open", flawless, mint never hinged, certified by Klein BPP, photographic finding by Tobias Huylmans BPP (2013) "genuine and flawless", Michel 400.-