Lot Essay
The Iruga group were named after Iruga So in Kii Province, and were of the Yamato Tegai School, working from the late Kamakura Period (circa 1300) onwards for some generations. They made mostly tanto with suguha, like this piece. There is a sayagaki by Hon'ami Jirozaburo stating that the blade was polished in Bunkyu 2nd year (1862).