Is this item rare for a 1978 children's audio piece?

As a specific radioplay from 1978, it holds collectible value for fans of Enid Blyton's works.

What is the primary format of this item?

The item is a Radioplay, which falls under the Non-Music genre.

The artist and author is Enid Blyton.

Name: Enid Blyton - Tina Und Tini Finden Den Geheimnisvollen Schatz
Brand: Enid Blyton

Non-Music

Non-Music · 1978

Year · 1978Genre · Non-Music, Children'sStyle · Radioplay

Used

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New / Sealed

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Is this item rare for a 1978 children's audio piece?: As a specific radioplay from 1978, it holds collectible value for fans of Enid Blyton's works.
What is the primary format of this item?: The item is a Radioplay, which falls under the Non-Music genre.
Who is the original creator of this story?: The artist and author is Enid Blyton.