Moony is a baby diaper brand from Unicharm Corp.
Their recent products are available as "MamyPoko" in some Asian countries.

This package was made before 31, May,1992(This is the deadline day for ad campaign on the side).
I almost jumped with for surprise when see this in a small old drugstore.
I was really lucky. If I didn't stop my car by a red signal at that time, I wont get it.

I tried to clean with a towel but print defaced so I gave up.
This is what I had been wanted since I was little.
It's too precious for me to open. I can't(^_^;)