Some of the types of souvenir sheets of North Korea issued in 1976 are confusing to me when trying to identify them. There may have already been articles on this topic that I have not seen, but I hope that some of our Korea Stamp Society members can answer some of my questions. One example of these souvenir sheets is Scott catalog number 1436, issued on March 12, 1976, commemorating the 100 anniversary of the telephone. It shows an antique telephone and a communications satellite. Scott mentions that it was issued “imperf, without gum”.
I have seen cancelled-to-order (CT) imperforated souvenir sheets, and mint sheets that are both imperforated and perforated.
What is strange is that some of the souvenir sheets are cut according to that type as seen in the image in Fig. 1, with no margin, and another type is cut with a white margin as seen in the image in Fig. 2.