Table of contents:
Design by S. Mirosavljević & R. Valić, Perforation L 11 1/2
Aeronautical organization “Hrvatska krila” (“Croatian Wings”) held an aircraft model exhibition in Zagreb starting March 25, 1942. A series of special stamps was issued to support the organization.
The issue consisted of four values with a surcharge equal to the face value.
| Mi 70 | 2+2 Kn | dark brown-lilac | 170,899 issued |
| Mi 71 | 2,5 + 2,5 Kn | dark green | 170,917 issued |
| Mi 72 | 3+3 Kn | carmine-brown | 170,877 issued |
| Mi 73 | 4+4 Kn | dark blue | 170,976 issued |
Stamps are printed in two different plates, with 25 stamps and with 24 stamps plus one pendant in the middle.
Sheets
Graver’s marks
On both panes we can find graver’s mark on the stamp on position 12. Graver’s marks are numbers: 1,2, 4 and 9.
Perforations
Many perforation errors are present, such as double perforations or missed perforations on all sides.
All stamps in this issue were intended to be in the rouletted perforation. The intention was abandoned once it became clear that separation of this perforation could easily damage the stamps.
Nevertheless, all issued stamps Mi 70-73 could be found in that perforation. Mi 71-73 are extremely rare, and probably come from the NDH Postal Museum.
Proofs
Rare proofs
Printing errors
Double prints
Blocks
On the same day the stamps were issued, two blocks were also issued on the same occasion.
| Block 1 Mi 74-75 | perforation L 11 | 35.937 issued |
| Block 2 Mi 76-77 | imperforated | 35.937 issued |
Block 2 – imperforated
Graver’s marks on blocks
The imperforated block has a graver’s mark – black letter “R” on the stamp Mi 76 and white letter “V” on the stamp Mi 77. Firstly it was determined that there were 2.000 of each graver mark’s printed but Wieneke in his catalogue determines that only 1.200 blocks with gravers mark exist. All blocks with a graver’s mark “R” have a plate flaw – bomb on the wing, but some blocks with the same plate flaw exist without a graver’s mark “R”, but they are rare.
Graver’s mark R
Graver’s mark V and bomb on the wing
Block perforations
Left to right: vertically imperforated, moved perforation, two double perforations, imperforated bottom
Block trials
Se-tenant blocks
Perforated and imperforated se-tenant block
Se-tenant blocks trials and errors
Block errors/flaws
Minister albums
Ten Minister albums were printed and this Minister album contains the largest quantity of different material in all of the NDH Minister albums. All of these ten albums differ in their content: they feature different color proofs of issued stamps in normal issue or in negatives, in various phases of print, blocks with different positions of stamps, print phases, as well as missing stamps.
Imperforated stamps are presented in plates and also with examples of phases of the print, plus color proofs in quarters.
In the Minister albums there is also a plate of stamp Mi 70 with a rouleted perforation.
Some examples of Minister album exclusive content:
FDC
FDC with Mi 70-73 stamps exist in two different sizes.
MC Postcards
Four different MC Postcards with motifs of Zagren pictured from the air exist, also with the special cancelation on the back.
