“Collector's edition” in Japanese
Short answer
Collector's edition in Japanese is “愛蔵版” (aizouban). Full meaning: collector's edition.
Other ways to say “Collector's edition” in Japanese
保存版
hozonban special issue (of magazine, etc.), timeless edition, collector's edition
永久保存版
eikyuuhozonban version for permanent preservation, version worth preserving forever, (must-have) collector's edition
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