European Congress of Engineers & quot; - Block of four stamps from the right margin of the sheet mint never hinged, from

This block of four stamps from the right edge of the sheet was issued for the European Engineering Congress in 1949 in Konstanz. The four stamps show the Insel-Hotel in Konstanz. On the stamp at the top left a plate flaw can be clearly seen: In the second digit "9" of the year "1949" there is a thick dot. There is another plate flaw in the lower right corner: In the word "Kongress" the two letters "N" and "G" are connected. Next to it a normal postage stamp as a comparative piece. Catalog no. 46 PF I and 46 PF II

The engineering congress took place from July 16 to 18, 1949 in Constance.

You will receive the block of four together with an album sheet for storage.