I just bought something interesting. In 1979 in Japan Calbee (the main card producer there) ran a promotion - if you got one "Home Run Card" which were randomly inserted into packs you could send it in and redeem it for an facsimile autographed mini bat of a star player. I only recently became aware that these things actually existed and bought one with an autograph by Isao Harimoto (Japan's hit leader)
I put some pics up here:
https://baseballcardsinjapan.blogspo...time-1979.html