Yard sale US M7 bayonet ponderings

I found this bayonet at a yard sale. The scabbard looks legit. The bayonet looks legit and has proper numbers on the handle panels underneath. There is a gap on both sides of the handle at guard and pommel as I have seen before. The guard is only marked USM7 but no manufacturer mark. Whatdoyathink?

https://www.milsurps.com/images/impo...8/x3npfp-1.jpg

This picture (below) is from a website about genuine M7 bayonets (the M4 guard on left, M7 guard on right) with the same markings as my bayonet has or lack thereof.

https://www.milsurps.com/images/impo...3dr8dpng-1.jpg

I thought all manufactures marked the guards opposite the US M7? Who made my bayonet? Is there a company who committed their marking?

The Scabbard

https://www.milsurps.com/images/impo...8/y384eu-1.jpg

The set up
https://www.milsurps.com/images/impo...8/n6iytb-1.jpg

https://www.milsurps.com/images/impo...8/07ra9n-1.jpg