Due to the low print run and speculations during the collapse of the Independent State of Croatia (NDH) the Storm Division block became one of the key items of the Croatia's philately.
Storm Division block.
Lately, four types of blocks are identified! The type can be determined by analyzing small differences of handmade initials O.A.
Currently, I have block Type No. IV, so I need Type I, II and III. And, of course there is also the super rare imperforate version of the block on my wish list.
Imperforate version.
