Just wondering if all of them do? I would assume so that all do, but wondered if anyone has gotten any that have not?
Yes, a maker's mark and statement of weight and fineness is stamped directly onto gold bullion, whether coins or ingots. The bullion itself, in effect, bears its own 'certificate' from whichever Mint or refiner produced it. Fortunately, gold is an element with a unique specific gravity, and other attributes which make it very easy to test for authenticity. The ancient Egyptians pioneered the 'acid test' for gold, and any jeweler, pawnbroker, or high school chemistry teacher can demonstrate the basics of gold. Are there counterfeit gold coins? Yes, over the centuries, crude copies of gold coins have been made. But because of gold's unique density (only platinum is as heavy), these copies are not very convincing. Once you've held a real gold coin in your hand, and you feel the heft and density of it, you're not likely to be fooled later by a non-gold copy.Of course, we recommend that you know your supplier when buying gold, just as you would with anything of real value.