This one appears to be one of the survivors which have not gone yellow. If you are waiting for one of these which has not gone yellow then this is what you have been waiting for. This MPI is styled like the long white case Coco 2, but it works with all Cocos including the Coco 1 and 3.
Radio Shack Cassette Player/Recorder. Buttons and cassette covering work fine. Apologies for testing with audio cassette it's all I had. Video will open in a new window. TRS-80 Computer. Tested. works (see video).