Posted 10/22/2014 10:36 am
The ones from Osaka, were made of an inferior mix of copper and iron,
according to this (in Japanese): http://kosennosekai.sakura.ne.jp/z42.htm
He also says that they were of better quality than others of the same time period, that were made of just iron. Maybe that is why they are listed as copper or brass in catalogs.
The brass looking one, I suppose it could be a bosen, but I am no expert so don't take my word for it.
according to this (in Japanese): http://kosennosekai.sakura.ne.jp/z42.htm
He also says that they were of better quality than others of the same time period, that were made of just iron. Maybe that is why they are listed as copper or brass in catalogs.
The brass looking one, I suppose it could be a bosen, but I am no expert so don't take my word for it.
