Hradcany at Prague - Overprint Airplane and new value (Czechoslovakia 1920)

11 August (Czechoslovakia ) within release Airmail goes into circulation Stamp Hradcany at Prague - Overprint Airplane and new value face value 28 Czechoslovakian koruna

Stamp Hradcany at Prague - Overprint Airplane and new value in catalogues
Michel:	Mi:CS 194
Yvert et Tellier:	Yt:CS PA3
POFIS:	POF:CS L3

Stamp is square format.

28/1000 COLOR OVERPRINTING/ DARK GREEN

Also in the issue Airmail:

• Stamp - Hradcany at Prague - Overprint Airplane and new value face value 14;
• Stamp - Hradcany at Prague - Overprint Airplane and new value face value 24;
• Stamp - Hradcany at Prague - Overprint Airplane and new value face value 28;