Driving home from my brothers and saw a sign for an antique shop. Got a feeling and asked the wife to stop. 15 feet inside the door I see this.Attachment 147529Attachment 147530Attachment 147531Attachment 147532
The maker mark on the tang is gone, but you can read "superior temp"
Any idea of the Maker and age? I believe late 1700s, but tell me what you know. More pics upon request.