First Day of Issue = March 15, 1933
Size: 26.00 mm x 33.00 mm
Quantity printed = 9,020
Perforated 10.00 x 11.50
Print method: Lithography

Stamp shows a proposed monument for Latvian aviators. The surtax was for wounded Latvian aviators.

Watermark



Catalog numbers
Scott CB15a
Michel LV 216B

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