Noel and I went to a local militaria show today. I was able to luck out and find these two insignia for a very reasonable price. The L.Bau was a small civil engineering organization within the Luftwaffe. Very little is known about this group of officials, other than their uniforms were made of stripped LW uniform parts(jackets and headgear), with the L.Bau eagle affixed to the arm. I've never seen a complete uniform in person before. The LG eagle is one that is referenced as an unknown organization. Maybe one day, its purpose will be discovered.