Predominant Historian Frank Heukemes refers to this badge in his book “German Awards of World War II - The General Assault Badge” as the badge by “Unknown Maker #10”
measuring 32 mm (w) x 1390 mm (l)
an open window above with two other soldiers peering out of it
measuring 31 mm (w) x 71 mm (h)
Fortresses & Fortress Troops (including: Miscellaneous Military
Denmark, Kingdom. A Felix Graf Von Luckner Badge, C.1958 Hold Predominant Historian Frank Heukemes refersA souvenir badge constructed of bronze with multi coloured enamels, the obverse centre features the coat of arms of the Danish Earl von Luckner, surrounded by an upward facing wreath of oak leaves and acorns, tied at the bottom with a plaque stating GRAF LUCKNER 1958 59, surmounted by a gilded eagle with spread wings, the centre reverse presents a vertical pinback, measuring 46. 81 mm (w) x 56. 09 mm (h), and in near mint condition.