Originally Posted by
50PlusCycling
I looked at that bike and a few others. So many good bikes and frames come up for sale in Japan, I wish I had room for more. I found an old catalog page from 3 Rensho. The bike I have is identical to the second bike on the page, it has the same lugs, fork, and seat stays, without logos. The only notable difference is the internal cable routing. The bike you found matches the one on the top of the page.
you're right about internal rear brake cable being different than the bottom bicycle on the catalog page. other differences i can see are nutted brake calipers, clamp-on shift levers and one bottle cage mount. the bike you got looks plenty cool and looks like it rides well - that's the most important thing.