On a sword that I recently acquired, I was wondering who the tsuba was made by. The sword was atrributed to Noro Masanori, but the iron handguard appears older. It is a flat iron, about 8-10mm thick. It has a cutout for the small knife, and a wild grass or reeds scribing on it. Please help me to determine the maker, and age, and value if any. Thanks in advance, I have tried unsuccessfully for a while.
(Edit Brian - resized pics down to 800x600 and converted to jpeg from gif to bring down filesize)