..always something new to discover in "Aces" magazine! I was surprised too but on closer study of my copy Many has described it exactly as it is..there is indeed an 'additional' bar literally on top of the double chevron!..(not to mention the unusual rudder markings on his Fw 190 A-5 - not new but not reproduced this clearly before..)
http://falkeeins.blogspot.com/2019/0...n-13-aces.html