> Yes. Agreed.
> The "Corner Glyph" witness marks seem to be quite unlike the
> "contentous glyph" witness marks.
That's true, but the actual surfaces of both blocks seems quite different from each other also. For example, You can clearly see tighter, parallel?radial patterns on the cartouche block but not on the corner block. This might be an indication that the cartouche block surface was produced by chiseling while the corner block is covered by smoother plaster. Therefore, the corner marks seem to reside on more rounded peaks, perhaps formed by plaster, while the marks on the block with the cartouche seem to be on sharper chisel peaks. However, in both cases, the marks appear to be sitting on peaks, not nadirs in the surface.