"POSTE PAR AVION" purple overprint on previous stamp (Syria 1920)

01 December (Syria ) within release Airmail 1920 goes into circulation Stamp "POSTE PAR AVION" purple overprint on previous stamp face value 10 Syrian piastre

Stamp "POSTE PAR AVION" purple overprint on previous stamp in catalogues
Michel:	Mi:SY 134
Yvert et Tellier:	Yt:SY-FR PA3

Stamp is square format.

Also in the issue Airmail 1920:

• Stamp - "POSTE PAR AVION" purple overprint on previous stamp face value 1;
• Stamp - "POSTE PAR AVION" purple overprint on previous stamp face value 5;
• Stamp - "POSTE PAR AVION" purple overprint on previous stamp face value 10;
• Stamp - Type Merson overprinted and Syrian surcharge face value 10;
• Stamp - Type Semeuse overprint and Syrian surcharge face value 1;
• Stamp - Type Semeuse overprint and Syrian surcharge face value 5;