Ultima Thule is TD's first -- and probably most rarest -- official 7" single release. Besides a counterfeit, i.e. an illegal reproduction in 1998, the vinyl single was never re-released after 1975.
Nearly 30 years after the original release, Ultima Thule, Part One was re-released on an official TD album (Antique Dreams, 1997) for the first time.
In 2004 the single was released as 5-inch CD as part of the Japan-only re-release of Alpha Centauri.
Exclusively for the Record Store Day (on April 21st, 2012) Esoteric released two limited edition vinyl items -- available from local independent record shops in the UK on that day only. Besides an LP re-release of Electronic Meditation, Ultima Thule was re-relased as 7" vinyl single in a cardboard sleeve.
Releases
Germany
1971: Ohr
7": OS 57.006; ear labels
Italy
1975: PDU/EMI Italia
7": P.A. 1101; black labels
Spain?
1998: -
Counterfeit-7": OS 57.006; black labels
UK
2012: Reactive/Esoteric
7": EREAS 1001; cardboard sleeve; limited edition of 1,000 copies
Ultima Thule was also released as part of the set Nebulous Dawn.