Maxell UR 90 Blank Audio Cassette Tapes IEC Type I Normal Bias 9 & OTHERS 4.Recent estate sale buy are these lot of 9 Maxell UR90 Normal Bias new sealed cassettes.There are also 2 Sony ones with one a  HD 60 and one a HIFi 60. and one each of a Memorex DB 60 and a Zenith HR60.