[thathappened]

Can't the weight be calculated to see if additional components were added between mock-up and production output?

I know weight is how you double check other manufacturing

[Tuna-Fish]

There is no method of producing a small quantity of silicon chips for cheaper than the mass production method, meaning there are no mock-ups -- there is just a software simulation and then the products made at the foundry.

Also, adding a few additional transistors and paths doesn't really add components to the chip in the way you think. They cause no meaningful difference in weight.