A Rare 1940-1941 German Blitzkrieg Upon Britain Medal

White porcelain with green and black paint, obverse illustrating four Luftwaffe planes in flight with the Tower Bridge of London in the background, surrounded by the inscription "ES GIBT HEUTE KEINE INSELN MEHR", reverse illustrating a swastika inside a wreath of oak leaves, surrounded by the inscription "SIEG DER DEUTSCHER GESCHICHTE WERDEN", surrounded by a second inscription "DER UNS AUFGEZWUNGENE KRIEG MUSS ZUM GLORREICHSTEN", 48 mm, near mint.