The Greek translation underwent a unique transformation from its first publication to its most recent. Rather than a complete redesign of the whole edition from one publication to the next or, as is most typical from one printing to the next, making only minor changes (typos, misprints, etc.), the Greek publisher simply changed the cover art as the films were released. The earliest printing (Greek C) has all John Howe paintings before the release of any of Peter Jackson's films. The next printing (Greek A), after the release of the first film, has replaced the cover of FR with movie art. The most recent printing (Greek B), following the final film by nearly a decade, has replaced all of the covers with movie art. I don't know if there were any intermediate printings between the final film and 2012.
This is another of those mistakes in design where the event of the painting doesn't happen in the volume. In this case the mistake is on the cover of TT, where a dragon is depicted attacking the fortress. The John Howe, painting, however, is of the Fall of Gondolin from The Silmarillion.
Ο άρχοντας των δαχτυλιδιών (Greek C), purchased on-line by proxy Charalampos Papandreou on Vendora in 2026 (paperback)
Tolkien, J. R. R., Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2000), 1, Η Συντροφιά του Δαχτυλιδιού. ISBN: 960-04-0366-X
——, Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2000), 2, Οι Δύο Πύργοι. ISBN: 960-04-0367-8
——, Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2000), 3, Η Επιστροφή του Βασιλιά. ISBN: 960-04-0438-0
Ο άρχοντας των δαχτυλιδιών (Greek A), purchased on-line from Antonis Karadoniou, Athens in 2019 (paperback)
Tolkien, J. R. R., Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2001), 1, Η Συντροφιά του Δαχτυλιδιού. ISBN: 960-04-0366-X
——, Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2001), 2, Οι Δύο Πύργοι. ISBN: 960-04-0367-8
——, Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2002), 3, Η Επιστροφή του Βασιλιά. ISBN: 960-04-0438-0
Ο άρχοντας των δαχτυλιδιών (Greek B), purchased on-line from Purchased on-line from Malliaris Paideia, Thessaloniki in 2026 (paperback)
Tolkien, J. R. R., Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2012), 1, Η Συντροφιά του Δαχτυλιδιού. ISBN: 978-960-04-0366-4
——, Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2012), 2, Οι Δύο Πύργοι. ISBN: 978-960-04-0367-1
——, Ο άρχοντας των δαχτυλιδιών, trans. by Evgenía Chatzithanási-Kóllia (Kedros, 2012), 3, Η Επιστροφή του Βασιλιά. ISBN: 978-960-04-0438-8
Χόμπιτ (Greek [H] A), purchased on-line from Purchased on-line from Malliaris Paideia, Thessaloniki in 2026 (paperback)
Tolkien, J. R. R., Χόμπιτ, trans. by A. Gavrilidi and Ch. Deligianni (Kedros, 2012). ISBN: 978-960-04-4311-0