Not sure if it's an optical illusion, but under zoom all 3 of those look to have what looks like an impact dent in the middle of the imperfection, looking concave rather than convex, possibly with raised edges, like the furrowing up around the edges of a crater, the concave bit disturbing the straight lines of the machining sweep.
Doesn't look like whiteworm, and it looks like the marks were there prior to lacquer application, which appears normal.
If they weren't all in the same place and the lacquer wasn't intact, i'd be calling stone chip. They look like they've always been there.
As SRGTD says, same place, got to be either mould casting from the same mould with the same imperfectioon, or some kind of punch ejection from the mould that has marked the freshly cast surface and was deep enough to still be there following the machining of the diamond cut surface.
