First Day of Issue = December 7, 1932
Size: 29.00 mm x 35.00 mm
Quantity printed = 12,020
Perforated 10.00 x 11.50
Print method: Lithography

Issued to shows stages of aviation development. This shows the first hydrogen balloon flown by Jacques Charles in France. The surtax was for wounded Latvian aviators.

Watermark
Watermark


Catalog numbers
Scott CB11
Michel LV 212A

For more information check out the links below
Jacques Charles
Latvian airmail semipostal stamps
Latvian aviation