Does this sound familar with anyone?
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These are unlabelled Maxells that were purchased through Terrapin Tapes
a few years ago. It was part of a case, and they included Blank Maxell
J-cards with them (on the side.) I will be happy to send you the
J-Cards, or if you don't believe me, just send them back and I will refund your
money minus shipping.
You can do a search for unlableled maxell dats to find more information
about these type of cartridges that Terrapin used to sell.