This is a stunning katana by the first generation Hizen Masahiro. It is a wide and powerful blade showing the best traits of the Shintô Hizen tradition. The nagasa is 27 3/8 inches or 69.5 cm. The moto-haba is 1.2 inches or 3.1 cm and the saki-haba is 0.93 inches or 2.4 cm. The torii sori is 0.8 inches or 2.0cm and the thickness of the Kasane is 0.3 inches or 0.7 cm. As one can tell from these measurements this is a very wide and healthy blade.
This smith worked around the Kanji era (1624). The blade is ubu with two mekugi-ana one of which has been filled. The hada is a good example of the famous konuka hada of the Hizen school founded by Hizen Tadayoshi. The hamon is a billowing gunome midare with some of the gunome almost reaching the shinogi. The tops of the gunome are profusely covered in nie forming a beautiful nie deki over the course of the entire blade. Hizen blades are famous for their thin skin and openings in the laminations of the skin steel. This blade was made with extra care as it does not have these and the skin is tight and perfect throughout the blade. The bôshi is midare with an o-maru turnback and short kaeri. There are bo-hi on both sides of the blade from the machi to just short of the yokote.
The blade is signed Hizen (no) Kuni Kawachi Daijô Fujiwara Masahiro (肥前國河内大掾藤原正広). It is signed on the ura (tachi-mei) as is common with Shintô Hizen swords of the Tadayoshi/Masahiro school. It comes in a shirasaya with a shakudo and gold foil habaki. It comes with NBTHK Tokubetsu Hozon papers attesting to the validity of the signature and the high quality of the blade.