A Mint And Unissued Luftwaffe Technical Staff Officer’s Trade Sleeve Insignia certificate_of_authenticity It is etched with a

It is etched with a ribbon banner inscribed "Zur Erinnerung an meine Dienstzeit" (In Memory of my Service Period) flanked by oak leaves on either side

After initial treatment

Early issue

embossed Luftwaffe seal at the lower left

during WWII Eastern border of Independent State of Croatia)

A Mint And Unissued Luftwaffe Technical Staff Officer’s Trade Sleeve Insignia certificate_of_authenticity It is etched with aConstructed of flat, twisted, and rolled silver aluminum bullion embroidery with dark blue strings sewn into the wings to give the wings definition; on a bluish grey Luftwaffe wool backer; with grey rayon backing on the reverse; measuring 105 mm x 41 mm; mint and unissued condition.