The first 11 copies of this demo were hand-numbered from number 00 to 10 in the white square down in the right corner on the picture of Anne Frank. All original issues of these first 11 numbered copies came either on red SMAT 60 tapes or maybe blue SMAT 90 tapes, as these were used depending on which was available at the time, but most likely, the first numbered copies are on red SMAT 60 tapes. If you find this tape on any other brand of cassette, it's a bootleg! Also, all tapes had hand-written labels on side A.