DLV/NSFK 'Segelflieger-B-Abzeichen'

DLV (Deutscher Luftsportverband) / NSFK (Nationalsozialistisches Fliegerkorps) related so-called 'Segelflieger-B-Abzeichen' (B-Class Glider Pilots Badge). The cloth badge is showing 2 machine embroidered gulls on a Luftwaffe grey wool base. Nice original badge in very good condition!