Czechoslovakia stamps year 1977 Airmail – PRAGA 1978 International Stamp Exhibition

Czechoslovakia stamps year 1977 Airmail – PRAGA 1978 International Stamp Exhibition MNH ? Czechoslovakia – Airmail Stamp for PRAGA 1978 Official Issue Date: 15 September 1977 — even though it commemorates the PRAGA 1978 exhibition, it was issued in 1977 as a special airmail (air mail) stamp. Purpose: Commemorative airmail stamp for the World Stamp Exhibition PRAGA 1978 held in Prague. Theme / Topic: Early aviation / aircraft, linking the idea of airmail and aviation history. Design & Imagery: Shows aircraft motifs (airplanes such as the E-Taube and von Dunn types on some variations). Stamp Details (Catalogue): Michel: 2397 Scott: C90 Yvert: 2233 Stanley Gibbons: 2359 Perforation: Comb 11¼ × 11½ Watermark: None Printing: Photogravure & steel engraving Paper: Plain, with water-activated gum (These numbers and details are standard catalog references used by collectors to identify and value stamps.) ? Context – PRAGA Stamp Exhibitions PRAGA was a regular international stamp exhibition series held in Prague — a major global philatelic event that brought together collectors and postal administrations. In 1977, Czechoslovakia issued several PRAGA78 related commemoratives throughout the year for different themes (Historic Prague Windows, Postal Uniforms, Regional Headdresses), culminating with the Airmail (Early Aviation) stamps on 15 September. ? Other PRAGA 78 Issues In 1978 proper (the official exhibition year), Czechoslovakia issued additional PRAGA 78 commemorative stamps (e.g., set featuring the Prague Town Hall Astronomical Clock) on 20 June 1978. There were also souvenir sheets (aršíky) and variants with/without inscriptions for collectors related to PRAGA 78.