Germany 1930 – Graf Zeppelin South America Flight (Scott C38–C39), Used
Complete used set of the 2 Mark (blue) and 4 Mark (dark brown) Zeppelin airmail stamps issued for the 1930 South America flight. The 4 Mark stamp bears the expert mark of Schlegl BPP on the reverse, confirming authenticity.

The 2 Mark blue appears well-centered with relatively even margins all around. The 4 Mark is centered slightly low and to the right.

Catalogue value: Michel (2025) for used set: €800.

Recent sales (2023–2025) show used sets with expert marks selling for €280–€360