Cased Luftwaffe Pilot Badge. Type Friedrich Linden, Lüdenscheid (FLL,)

Tombak/brass based and in a very good, slightly worn condition. The wreath with all of the matt silver plate still present. The eagle with practically all of the dark oxidised finish and attached to the wreath with two typical rivets.
Not marked but a known variation that has been attributed to the company of Friedrich Linden, Lüdenscheid (FLL). With the typical laying down block hinge.
See Sebastien Talbot, The Luftwaffe Pilot and PO Badges.
The fitting case in a very good, slightly used condition. Embossed in gold on top of the lid with the designation „Luftwaffen Flugzeugführer Abzeichen“.
Set in sehr guter Erhaltung!