10 October (Spain ) within release Panamerican Postal Union Congress goes into circulation Stamp Panamerican Postal Union Congress face value 4 Spanish peseta
Stamp Panamerican Postal Union Congress in catalogues | |
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Michel: | Mi:ES 597 |
Yvert et Tellier: | Yt:ES PA89 |
Edifil: | Edi:ES 619 |
Stamp is horizontal format.
III Congress of the Union a postcard Panamericana. View from street of Alcalá in Madrid.Also in the issue Panamerican Postal Union Congress:
Stamp Panamerican Postal Union Congress it reflects the thematic directions:
An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines. The human activity that surrounds aircraft is called aviation. Crewed aircraft are flown by an onboard pilot, but unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers. Aircraft may be classified by different criteria, such as lift type, aircraft propulsion, usage and others.