Any ideas

[sonofadigger]

Hey guys I found this at an old farm house today it says warranted superior I did a Google search and found similar in the handles of old hand saws but none with the long threaded shank on the back

 

[creskol]

It is a saw handle medallion as you suspected.

Please see: http://www.disstonianinstitute.com/medv2.html

 

[vpnavy]

Nice sonofadigger.