Let's Do The Twist Again

What bothered me is that it looked like the missing bit was through and throug whearas the other side showed a full coin
Your explanation about a piece of plastic superposed on the rim must be correct
I never had or never saw a TPG holder before but I should have deducted that the photo of the two sides was not consistent

At least I learned something again which makes me happy

Very often people will not complain just go somewhere else
The better companies in general have a 99.7% performance against documented complaints
The cost of quality ( non quality really ) is very difficult to calculate and allways underestimated
So people fall back to the lowest quality that still keeps them in business
They have quality managers but thru the system of empowerment
finished product inspectors often no longer exist
every one is responsable for his/hers own quality