Germany, Luftwaffe. A Ground Assault Badge certificate_of_authenticity For the purpose of identification

For the purpose of identification this badge is marked with a number on the rim

A studio photograph of a Royal Yugoslav Army officer

2) A 1939 National Sports Championships badge

with an additional set of horizontally-arranged loops

Germany, Luftwaffe. A Ground Assault Badge certificate_of_authenticity For the purpose of identification(Erdkampfabzeichen der Luftwaffe). Constructed of silvered and patinated zink, the obverse consisting of an oval oak leaf wreath, joined together at the bottom by ribbon, topped by a Luftwaffe eagle clutching a mobile swastika, overlaying a stylized cloud from which a lightning bolt emanates and strikes the ground, the reverse with an integral hinge and vertical pinback meeting an integral catch, unmarked, measuring 43. 90 mm (w) x 56. 48 mm (h),