Spear & Jackson saw plate age?

[bentontool]

I have this old Spear & Jackson saw plate that I purchased as is; no handle or nuts.
I cannot find the same trademark anywhere in my reference books.
Any thoughts as to vintage? I suspect it is circa 1850 to 1880.
Additionally, I would very much like to re-handle this saw, and get it back to working condition.
Any suggestions for appropriate furniture?

 

[Orraloon]

You are likely right about the age so I cant really add much to the history. They did start making the skew back version in the 1880tes so yours is likely older than that. I have never had a saw that old in my hands. As to handles there may be some ideas here.
My Little Saw Museum… | The Saw Blog
Regards
John