Your identification of each character is correct.
Together they are pronounced Mikazukimura
The characters are Mi (Three) Ka (Sun) (Tsuki) Mura (Village)
The tsu sound becomes dzu or zu in the middle of words.
It is a theme park token, from this place: http://www.mikazukimura.com
Inside the park, food stands only accept the tokens.
I think they refer to them as 1 mon, to avoid confusion.
Inside the park, you can exchange 100 yen for 1 mon.
This theme park opened in 1998, but I hope your grandfather got back before then...
Together they are pronounced Mikazukimura
The characters are Mi (Three) Ka (Sun) (Tsuki) Mura (Village)
The tsu sound becomes dzu or zu in the middle of words.
It is a theme park token, from this place: http://www.mikazukimura.com
Inside the park, food stands only accept the tokens.
I think they refer to them as 1 mon, to avoid confusion.
Inside the park, you can exchange 100 yen for 1 mon.
This theme park opened in 1998, but I hope your grandfather got back before then...





















