First Day of Issue = December 4, 1930
Size: 42.25 mm x 28.50 mm
Quantity printed = 30,800
Perforated 10.00 x 11.50
Print method: Typography
The surtax was for the Latvian Anti-Tuberculosis Society. The stamp shows tuberculosis sanatorium.
Watermark

Catalog numbers
Scott B64
Michel LV 169