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Learning so much here haha. Really nice! I will remember all these funny packaging tips here when I have to go through customs with precious metals in the future.. :)

There is just enough metal in a CD to trigger the detector to throw off the machine.
But you shouldn’t have any issue traveling with precious metals as long as it not over $10,000. I’ve traveled with metals many times. As a matter a fact, instead of bringing tons of cash to Europe when I went to Italy years ago. I brought 5 ounces of gold and converted it as I needed money.