G'day to all,   I've been working on a research article which is now nearly complete. I will post it to my website and with Brian's permission also add it to the Articles section of this Message Board shortly. Before I do that, I though you guys may want to see an interesting sword.   This tachi is ubu and is designated Juyo Bunkazai. It is torii-sore, wide mihaba, thin kasane, chu kissaki. The jigane is o-itame with prominent chikei and ji-nie. The hamon is ko-nie with plentiful sunagashi,