Swing-wing aircraft by Albrecht-Ludwig Berblinger (Germany, Democratic Republic 1990)

20 February (Germany, Democratic Republic ) within release Historic Aircraft; European airmail exhibition ""Lilienthal ' goes into circulation Stamp Swing-wing aircraft by Albrecht-Ludwig Berblinger face value 50 East German pfennig

Stamp Swing-wing aircraft by Albrecht-Ludwig Berblinger in catalogues
Michel:	Mi:DDR 3313
Yvert et Tellier:	Yt:DDR 2917

Stamp is square format.

Also in the issue Historic Aircraft; European airmail exhibition ""Lilienthal ':

• Stamp - Draft swing-wing aircraft by Leonardo da Vinci face value 20;
• Stamp - Draft swing-wing aircraft by Melchior Bauer face value 35+5;
• Stamp - Swing-wing aircraft by Albrecht-Ludwig Berblinger face value 50;
• Stamp - Glider by Otto Lilienthal face value 90;