Zinc based and in a good, worn condition. The wreath with approx. 60% of the gilt plate. The eagle with practically all of the silver plate 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). See Sebastian Talbot, The Luftwaffe Pilot and Pilot/Observer Badges.

Zinc based and in a good, slightly worn condition. The wreath with approx. 50% of the gilt plate still present and some patina. The eagle with practically all of the silver plate 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 block hinge. See Sebastian Talbot, The Luftwaffe Pilot and PO badges.

Zinc based and in a very good, slightly worn condition. The wreath with lots of the gilt plate. The eagle with most of the silver plate still present 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 block hinge.