These Clear Bookmarks came with Manga releases in Japan. I also added the Bookmark Set that was gave away with tickets for the Classical Concert 2018.
 

These came with release of Kanzenban Collection (完全版コレクション) Manga
Manufacturer: not sure, maybe Kodansha (講談社)
Year: 2013
Size: 45 mm x 130 mm 

 

Sailor Moon Manga Bookmarks (Kanzenban)
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Sailor Moon Manga Bookmarks (Kanzenban)
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Sailor Moon Manga Bookmarks (Kanzenban)
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Sailor Moon Manga Bookmarks (Kanzenban)
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Sailor Moon Manga Bookmarks (Kanzenban)
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These came with release of Bunko Collection (文庫コレクション) Manga (with the first Volumes came the set with inners and with later volumes came the set with outers)
Manufacturer: not sure, maybe Kodansha (講談社)
Year: 2018
Size: 65 mm x 150 mm 

 

Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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Sailor Moon Manga Bookmarks (Buko)
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These came with the purchase of tickets for the Classic Concert (美少女戦士セーラームーン Classic Concert 2018) also available at The Super Live (The Super Live 東京プレビュー公演 概要) because of the release of the Bunko Collection (文庫コレクション) Manga.
Manufacturer: not sure, maybe Kodansha (講談社)
Year: August to September 2018
Size: 65 mm x 150 mm 

 

Sailor Moon Manga Bookmarks (Concert)
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Sailor Moon Manga Bookmarks (Concert)
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Sailor Moon Manga Bookmarks (Concert)
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Sailor Moon Manga Bookmarks (Concert)
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Sailor Moon Manga Bookmarks (Concert)
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Evelopes they came in.

 

Sailor Moon Manga Bookmarks (Bunko)
Envelope inners (front)
Sailor Moon Manga Bookmarks (Bunko)
Envelope inners (back)
Sailor Moon Manga Bookmarks (Bunko)
Envelope outers (front)
Sailor Moon Manga Bookmarks (Bunko)
Envelope outers (back)
Sailor Moon Manga Bookmarks (Concert)
Envelope Concert (front)
Sailor Moon Manga Bookmarks (Concert)
Envelope Concert (back)