Trieste Zone A : Diplomatic Conference on International Air Law


Issue date: 01/10/1952



Savoia-Marchetti S.M. 95C (4‑engine with propeller) over the Coliseum ancient amphitheatre in Roma; in the background, poles with flags. Watermarked.                                       


Corner block of ten stamps. With Control Number 4994.


Watermark in the selvage of the above block: POSTE ITALIANE.



Back of above corner block, showing the watermarks: winged wheel third and round form; watermark #277 according to Scott catalogue.



Block of 4 stamps – Cancelled To Order (CTO) – Dated 4 October 1952.


Variety with aircraft touching the Coliseum.


Variety with white spot in the centre of lower front part of the Coliseum.

First Day Cover: Venetia cachet Nr. 157 – Blue and red cachet; Pegasus. There is a stamped number on the back of the cover.

More information on Pegasus can be found by clicking on the following link: The Power of Flight and Peace Symbols.


Back of above cover with hand-stamped number and following inscription: Complete list of Venetia F.D. Covers on “Il Collezionista” Turin.


First Day Cover. Variety of above cover, with shift in red imprint.


First Day Cover with generic aircraft and red halberd on the cachet.


First Day Cover. The aeroplane on the cachet looks like the same as on the stamp, but it is not a good drawing.


First Day Cover with a generic aircraft. The cachet shows Saint Peter’s Square and Basilica in Rome, and the red halberd taken from the Trieste’s coat of arms.



First Day Cover with a generic aircraft. The cachet shows Saint Peter’s Square and Basilica in Rome, and the red halberd taken from the Trieste’s coat of arms.


First Day Cover, Terges red cachet. Trieste (Tergeste in Latin) would derive from the Celtic word Terges, meaning market.


First Day Cover – Issued by the Circolo Filatelico Triestino.


First Day Cover – Issued by Associazione Filatelica Triestina – Registered.


First Day Cover – Issued by Associazione Filatelica Triestina. Trieste’s coat of arms with a red halberd. Green, white, and red strips from the Italian flag; the latter flag was officially adopted on 18 June 1946, when Italy became a republic and the monarchy ended after World War II.


First Day Cover. Same as above without indication of the Philatelic Association.


First Day Cover.


Maximum card – Printer: A. Strocchi, Milano.


Commercial cover sent to Dr É. Pepin, first Director of the Legal Bureau of ICAO.

Franked with two stamps of this issue. Postmark dated 18 October 1952.


Maximum card reproducing the stamp issued by Italy. This maximum card was prepared for the 9th National Philatelic Meeting held in Roma, from 6 to 8 February 1954. The card bears the Trieste stamp with postmark.


Reverse of the above card.


Background: The stamp from Italy issued on 29 September 1952 for the Diplomatic Conference on International Air Law (see at the following link: Italy - Diplomatic Conference on International Air Law) was overprinted with AMG‑FTT (Allied Military Government ‑ Free Territory of Trieste) by the Allied Military Government of U.S. and Great Britain.

When World War II hostilities ended near the disputed city of Trieste at the upper end of the Adriatic Sea, Italy under Anglo-American occupation held Zone A (a narrow strip including the ancient port itself) and Yugoslavia controlled Zone B to its south and east. Each had ambitious to annex the neighboring territory and issued overprinted definitive stamps for use in the patch it controlled.

The Diplomatic Conference on International Air Law, convened by ICAO in Rome, Italy (in the FAO Palace) at the invitation of the Italian Government, met from 9 September to 6 October 1952. This Conference adopted a new air law convention on damage caused by foreign aircraft to third parties on the surface. Delegates or observers representing thirty-two countries and seven international organizations attended it.

More background information on this issue can be found by clicking on: The Rome Convention and its modernization.

The flag of Trieste and the flag of the former Free Territory of Trieste, are plain red with the top of a lance in white. The exact name for the lance is halberd (in Italian alabarda), like the lance used by the Vatican Swiss Guard. The coat of arms of Trieste was mainly used in Zone A and was the official coat of arms of the Free Territory of Trieste as mentioned in the constitution of the FTT. This coat of arms is not used officially today; but it is commonly used as general identification for this territory.

Note on the watermark: There are three types of Winged Wheel watermarks as shown by the following illustration. Type 1 is oval in appearance and can be indistinct. Type 2 is only used for certain recess printed stamps. Type 3 is usually much clearer and is more circular in appearance.