At Kyobashi station of JR Tozai line, there are some old manhole cover on the platform.
The first one is
and this has Japanese Katakana character 'Tatsuno"/
The second one is
I'm sorry this photo is noto so clear.
And I don't knoe why there is manhole cover of Higashiosaka city on th platform.
In addition, there are manhole special cover that was made in commemoration of the flower exposition in Osaka Tsurumi.