According to Meyer ("Disinfected Mail", page 67/68) main Type H was used from 1858 to 1860.
The picture shows a letter from Constantinople (June 2nd, 1858) to Vienna. There are no rastel or slits.
The postage is for a double weight letter:
42 kr. (in red and in blue) = 2x 12 kr. Constantinople until the Austrian border + 2x 9 kr. CM for the delivery within Austria.