Wow, that is so cool. Again I got lectured. I don't have a brown and white to compare, probably you are the first to do this comparison.
These rails are called こうかレール, one of the most expensive rail parts. Also very very rare so what you have there is a treasure trove of research material.
These rails are called こうかレール, one of the most expensive rail parts. Also very very rare so what you have there is a treasure trove of research material.
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