permanent preservation edition; collector's edition; version worth keeping forever
Used for books, media, or products marketed as timeless or essential enough to keep permanently. Often carries a nuance of special quality or completeness.
A permanent preservation edition DVD of this movie has been released.
He is collecting all volumes of the permanent preservation edition of that manga.
Compound of 永久 (eternity), 保存 (preservation), and 版 (edition). A straightforward modern compound with no obscure historical derivation.