【Rare/Unused】Japan Music Education Center YGC Folk Guitar Course Teaching Materials Set with Box

This is a set of teaching materials for folk guitar from the YGC Super Guitar School, formerly sold by the predecessor of U-CAN, Nihon Ongaku Kyoiku Center.
This item was found during a cleanup of my parents' home and is an **unused, stock item** with all the original enrollment documents intact.

[Set Contents]
SUPER GUITAR BOOK 2-5 (4 volumes total)
TAK TEXT BOOK with Tabs for All Songs (Rare illustrated cover)
FOLK GUITARS Guidebook
Original Enrollment Postcards and Documents
Dedicated Storage Box

[Product Condition]
All items are unused, with no writing or noticeable folds, and the contents are in very clean condition.
As this is a vintage item from several decades ago, there are slight age-related stains and fading on the outer box and documents, but it is in a condition that can be enjoyed as part of its vintage charm.

[Recommended Points]
With tablature (TAB notation) for all songs, it is still fully practical as a teaching book today.
The pop color scheme and surreal illustrations, unique to that era, are beautiful, making it a valuable item for retro interior decor or as a collectible.
Although carefully stored, I would be happy to pass it on to someone who understands vintage items.
It will be carefully packed and shipped via Mercari delivery (anonymous shipping).