I am aware of this chip and the other values that go with it. I posted on the subject maybe 8 months ago when some time after a quantity of drilled were reported, I was offered undrilled.

I hope Jim Perlowski reads this - he reckoned it would be impossible to repair a drilled chip that would be undetectable to the naked eye.

Not only is it a concern with respect to all clay chips known in drilled state, but also many where drilled may exist but may not be cataloged because the owner has plans for them.