If you were to show this person a pristine 542 million year old fossil trilobite, what would they say? The trilobite has been in the ground a lot longer than the coin has.
Send him to "Answers to Frequently Asked Questions about Ancient Coins" at this URL: http://augustuscoins.com/ed/numis/ If you have a lousy give-away-level coin, give him one so he feels the need to check up on it. You might recruit a new collector!
I've had mixed reactions when people learn that I collect ancients but most that know me well enough that I've mentioned this hobby to them have been in my house and seen my library and know how much time I put towards studying and collecting ancients. It takes a lot of trust for me to even let a good friend into my house. It helps too that I've got a website I can point them to that references all sorts of hoard reports and things. That said, at the end of the day there are really only a few people whose opinions without hard evidence I value enough to take seriously when it comes to the authenticity of my own coins. If some random person calls them fake as happens on web forums and other places from time to time I largely just ignore it. I've done the due diligence on my coins to more than convince myself. If someone seemed to have a good faith interest in seeing the sort of evidence I consider as part of that process I'd have no problem sitting down for a few minutes or even hours and showing them but I see no reason to try to convince the average person that they're wrong there.
Which is worse, the folks who can't be convinced that they are genuine, or those who are convinced they are genuine and that therefore you have no business owning them? I wonder which of these drivers was really working on that professor. Randy, ask the Prof to explain why he thinks the age of the coins has anything to do with their state of preservation? What will 20 centuries of lying in a clump beneath the surface of the ground do to a silver coin (versus bronze)? Get him to tell you, and be prepared with a printout of the facts on the metallurgy of ancient coins. He needs to get his facts straight, even as he expects you to do.
Oh dear. Poor @AncientJoe has spent all that money on nothing. I don't think so And @panzerman, all those lovely coins are not ancient . And everyone else! I wouldn't worry about it too much. At least he is not a competitor. I am off for my holidays, 2 weeks away with no mobile signal, or internet. Total peace and quiet. Can't wait.
It might go up to 60% if all Canadian CT members here are outbidded by American bidders in the next @Severus Alexander auction.......
You make a deal with the Man Who Knows Everything. You send the coin in for grading. If it comes back "authentic", he has to pay the cost. If it comes back fake you pay the cost and an equal amount to him. 100% he does not accept the deal. And it's very true, the older you get, no matter how much you know, you slowly realize you don't know anything.
Doesn't surprise me. From the people I met going into nursing when I was getting my Chemistry degree, they weren't the sharpest tools in the shed. They thought they were though. The dept. head would tell us nursing student stories instead of jokes.
I have a good friend who is a PhD Organic Chemist. We have had some very interesting conversations. One of the things that has always fascinated me about chemistry is an example like NACL. On its own, pure sodium explodes on contact with water. As a gas Chlorine is poisonous. However, when they are together we use it to season our food. NACL is table salt.
Yes but some pairing do not play as nicely. Pure carbon can be a diamond and oxygen is needed to support life. Combine them into Carbon monoxide and we die.