Audio Magnetics XHE Ultra I - 90 - 1979
A series released for the Canadian market (maybe US as well?).
XHE released type I, II and IV tapes and were accepted as good quality cassette tapes. They also had a fairly unique packaging appeal, making them a favorite for nostalgic and collectible reasons. This tape "sealed" is rarely offered.
Note: In August of 2021, 10 Tapes XHE Type I (Green box) were sold on eBay between $38 and $45 USD each. There is one available at a ridiculous price, but it also cost me a pretty penny.
About Audio Magnetics:
Audio Magnetics was a manufacturer of magnetic tape products based out of Switzerland. Very little is known about this company. Some of their 1978 released tapes were manufactured and distributed in Portugal and possibly released in the UK and Ireland.
If you have information about this company, please let us know so that we may share it with everyone else.