I am just glad that I have a loving and loyal son who lives in Tokyo. That's how I solve the problem. But many Japanese cartridges sell for the exact same price in Tokyo as they do in the US, e.g., Lyra. I have never been able to figure that one out.
Warjarret, the more I think about it, the more I seem to recall that the Blue variant has pure silver coil wire, whereas the Vermillon has silver plated copper wiring. But this info should not be hard to verify. When I finally have to get my Urushi rebuilt, I am going to ask for the Platinum upgrade. They do not sell an "Urushi Platinum", but I think it's available on a rebuild.
Warjarret, the more I think about it, the more I seem to recall that the Blue variant has pure silver coil wire, whereas the Vermillon has silver plated copper wiring. But this info should not be hard to verify. When I finally have to get my Urushi rebuilt, I am going to ask for the Platinum upgrade. They do not sell an "Urushi Platinum", but I think it's available on a rebuild.

