But we do see this question asked a lot. But it's a great question! Maybe one day someone will find an authentic aluminum Cent or Cent struck on silver planchet again.
Your not kidding, I remember science class circa 1978 and the teacher passing it out to everyone (to play with)... Then again, I was allowed to smoke on the bus that year. 13 years old and already an adult, or at least I thought so...
The efficient market theory works very well with coin collecting if a lot of people don't believe it works at all. If they don't believe, everything will be picked over endlessly until the odds against an individual finding something even trivial goes to the moon.
Mercury...don't make me laugh, I played wit it as a kid and it never bothered meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee.
I worked in a Wind Tunnel in the 60's and that stuff (Mercury) came in quart bottles. If it got spilled on the floor or table we didn't think any thing about it and just kept working. I remember rubbing it on a penny once. I am luck I didn't get poisoned.
Some dentists in the USA got all freaky about the mercury in the fillings and advised their patients to have it all drilled out and replaced with porcelain. My dentist thinks it's no big deal.
Well, it was bragging when I was 13 - 18, then I grew up a little... and didn't talk about it. Now I bring it up for the kids of today to know what it was like... That is nothing when it came to my childhood... I actually rode in my fathers 1973 Grand Torino Sport and help him plant and then pick Pot plants up and down route 301 and route 13 in Delaware and Maryland. Nothing that I am proud of for sure, but feel more like I over came so much more than a regular childhood... He was in a bike gang... Again, one of those things that the kool kids like and made me popular. Yet today, I am ashamed of those experiences for my father... What was he thinking...
We used to skip school and play the slots in Waldorf, MD on 301, and we'd take the shortcut on Rt. 404 through Georgetown, DE to get to our house in North Ocean City (MD). Chris