This piece is from the estate of a deceased collector.  The family moved a lot of the collection into the garage.  Many of the artifacts suffered rust damage while stored.  Most of the helmets in this auction came from that garage, and so did a few of the other pieces, this included.  Corrosion shown in the photos.  This would make an excellent restoration project, as the blade has survived surprisingly, in good condition.  See photos for a better physical impression of this piece.