Lot no. 417

1940, Päts 15 S., blue, corner block with printing order number T.134 of March 12, 1940, printed with the same plates as the red 15 S. of 1936 (Mi 125). Same marginal numbers as the red proof block with the printing order of Nov.2, 1936 (subsequent lot). Printed in blue color to reflect the increase in the postal rate for domestic letters from 10 S. to 15 S. on April 1, 1940. Issued on April 15, 1940, mint never hinged, very fine (Hurt/Ojaste F:1)