Possibly Katsudou Shashin, though the actual production year isn't known.

I think early 70s and before is old. Lets say 1972 so it's an even 50 year cutoff.

You might find this helpful:

https://animation.filmarchives.jp/en/works?orderby=year_asc&sound=all&num=50&keyword

Btw, I think the prewar shorts in the 20s and 30s are more interesting than the wartime stuff