This very old Disston handle I found without plate but with the split nuts. She has found a new roughly shaped piece of apple wood. Some cracks have been glued and it is now looking for a 26″ plate for a long term relationship.
From what I gather on the Disstonianinstitute.com medallion page she was made late 1840’s to early 1850’s. The institute has a very comprehensive body of information about Disston’s woodworking saws.