Hello, I have an American copy of Zeppelin 1 (SD 8216) 75 Rockefeller Plaza labels. The cover title top right, is shifted to the left about 2 or 3 millimetres. Leaving black dots on the left edge of the L,E,D,Z etc. In the past I found a reference and title given to this cover variation. But cannot find it now. Can anyone out there tell me what this variation is? Thanks.