First Day of Issue = September 5, 1933
Size: 37.00 mm x 23.00 mm
Quantity printed = 8,320
Perforated 10.00 x 11.50
Print method: Lithography

The surtax was for wounded Latvian aviators. The plane is an American Gee Bee but the exact model is unknown.

Watermark



Catalog numbers
Scott CB21
Michel LV 228A

For more information check out the links below
Gee Bee Model R
Gee Bee Model Z
Gee Bee Senior Sportster
Gee Bee Sportster
Latvian airmail semipostal stamps
Latvian aviation