Joined: Nov 2006
Posts: 19,810
Likes: 597
From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Do you have any photos of the whole bike?
I saw a no-name cottered aluminum crank like that on ebay a while back; but didn't save a photo.
Knowing it's in Japan and seeing it covered with Oriental style graphics I can't help but think it's locally made. I know this is irrational, of course, but there it is. I suspect you'll see another one like this before anyone in the US does.