In sale I noticed unusual #10-7 - short tang.
I think this reworking of the owner
due to inaccurate chamfers on the handle.
But I could be wrong. Friends, I want to know your opinion

This alteration makes sense - balance shifts toward the wedge.
So still made on the old kitchen knife for metal save.

There is another method of installation blade on handle,
but I doubt he applied here (last pic)