NEVER (Did I say NEVER?) NEVER, EVER, EVER try to clean a coin, no matter how dirty or ugly it looks — leave it alone! Here’s why that’s so important — if you inherited a chest of drawers that came out of George Washington’s White House, and it was dirty and scuffed up, would you strip it and paint it yellow? I certainly hope not!! You’d destroy much of the value if you did that, because it wouldn’t be original any more. It’s no different with coins. Several years ago, a young lady brought a VERY rare coin into our store and wanted to sell it. It was quite valuable, but it had been scrubbed with a Brillo pad — so it was nice and shiny — but it was badly damaged from all of the fine scratches from the scrubbing. We still ended up paying her almost $6,000 for it, but we had to tell her that if the coin hadn’t been scrubbed, it would have been worth literally $26,000!! Most coins won’t be affected to that degree by cleaning, because most coins don’t start off being worth $26,000, but you get the idea — never clean a coin, “just in case”!
Just about everything is common. That’s right, just about everything is common. If you think about it, that’s what makes rare stuff rare — the definition of “rare” is… “most things aren’t”. Just because you don’t see Buffalo nickels in your pocket change every day, that doesn’t make them rare — every coin dealer in the country probably has tons of them. However, that being said, for most of the older types of coins, there are usually at least a few “key dates”, while all the rest will be common dates for that type of coin.
Age does NOT make something rare or valuable! If that were true, rocks and trees would be worth a fortune, and we’d all be rich. However, while that’s generally a true statement, there’s always an exception — if a coin is extremely old, even if it’s a common date for the kind of coin that it is, the value can rise significantly if it’s in mint or near-mint condition. For example, an 1844 Large Cent isn’t rare — 1844 is a common date for Large Cents. But if you have one in mint condition, it’ll be worth a pretty good bit — not because of the date, since it’s common, but because of the condition. This would be an example of what we call “condition rarity”, where the coin itself isn’t rare, but it’s scarce in that condition. Just remember that for many coins, especially the more modern stuff, they’ll still be very common even in brand new, mint condition.