少年 (Shōnen) No.6 (June 1966)

This is a full-page Nintendo advertisement from the June 1966 issue (No. 6) of the Japanese boys’ manga magazine Shōnen (少年).

The advertisement is promoting the newly released “Black Bat” (ブラックバット) and “Change Card” (チェンジカード) all-plastic playing cards, each priced at ¥500.
At the top of the page it is titled “The world’s finest – Nintendo – all-plastic playing cards” (世界で最高《任天堂》のオールプラスチックトランプ).