Maker's Mark?

[mgolab]

I was reviewing a spike hatchet in my collection which was the subject of my post on Jun 8, 2023.

I am not sure whether I discovered a maker's mark on the underside of the spike. An "X" with a heart in a shield? or perhaps just pitting....

As indicated on my prior post, there is a distinct "LT" on the one ear.

Thank you for any feedback, comments.