1928 - 30  Air Mail

5c - Carmine and blue
Engraved - Perf 11 - Scott #C11 - 1928
5c - Violet 
Engraved - Perf 11 - Scott #C12 - 1930
65c - Green 
Engraved - Perf 11 - Scott #C13 - 1930
$1.30 - Brown 
Engraved - Perf 11 - Scott #C14 - 1930
$2.60 - Blue 
Engraved - Perf 11 - Scott #C15 - 1930
The Graf Zeppelin
Zeppelin Cover