Bringing out an oldy for comment

[kai]

Originally Posted by A. G. Maisey

File or vise?

May I suggest that you look at this pattern under magnification, Lew.

There are criss-cross lines with a diamond between.

If the lines are impressed and the diamond higher than the lines, I think we are looking at a file.

If the diamond is impressed and the lines are higher than the diamond, I think we are looking at a vise imprint.

I think Alan explained my comment above better than me.
I believe I'm seeing the diamonds being higher, i. e. a file...

Regards,
Kai