Rock Island Auction has a number of unpapered blades selling in their May 2022 premier auction. I was intrigued by this Odachi. Hamon looks a bit thin in places to me…  I assume this was probably a Shinshinto era sword like the one in the attached photo. Does anyone know the history or background of these late production Odachi?  After enjoying a period of popularity during the Nanbokucho era in the 14th century they almost weren’t seen again until the 19th century.  The handful of surviving ubu