【参考】
In august 2012
The large-scale construction work replacing the antenna post on the top of Tokyo Tower carried out for the first time since its
construction in 1958.
This rubber baseball was then found from the Inside of the antenna post.
Why this ball has got into such a place .
We asked for the public:
"The ball hit by a baseball boy had slip into construction yard"
It was actually used in the construction worker as a memento...
However, this "WHY" has never been answered and
This ball is now called a "Mystery Ball"