The latest edition of ISIS lists "The Glasgow Box", a three-CD bootleg from Crystal Cat. Disc One is devoted to Mark but the track listing isn't given. It has 12 tracks, though. Discs Two and Three are Dylan - I make it 24 tracks in all. To quote: "The sound is of quite outrageously good quality ... there is virtually no extraneous noise". The CDs come in two jewel cases that slot into a laminated card outer sleeve. The discs are full colour and there are pin-sharp photos.
Apparently, Crystal Cat is working on a 6-CD box set from London but it doesn't say if it is limited to Dylan or not.