A commemorative sign marks the date of your journey on the 'Ibutama'.
Here is some more information about the train, including the Japanese legend that the train takes it's name from:
I also found a YouTube video someone made of a trip on the Ibutama, if you're interested... http://www.youtube.com/watch?v=wkKQ5KyjAkY.
I apologise in advance if I'm tardy with commenting on your blogs or returning comments during the week... I will get to you though!