The Militaria Dealers
Tel: 07775 661417
Web site: https://www.themilitariadealers.com/
Roughly, 55mm diameter, Luftwaffe blue/grey wool base with machine embroidered lightning bolts all in silvery/grey rayon threads. Very good condition.
The outer edge of the badge is trimmed with hand stitched twisted, silvery/grey rayon cord indicating NCO ranks.