were the rage as soon as coins were first minted, a matter that is
itself shrouded in numismatic history. Herodotus claims the Lydians
first minted coins in the 5th or 6th century BCE, but Aristotle says
it was a certain Phrygian, namely the wife of King Midas. Yes, that
King Midas. In any case, authenticating coins for sale or purchase
remains a high-octane subject. Here are the basics of authenticating.
coin buyers and buyers the world over know that
two heads and no flutes spell trouble. Throughout history, two-headed
coins bespoke their own doom, since they were almost never minted. In
modern times, double-headed coins are a rarity, minted specifically
to commemorate this or that. Real, rare coins typically have one head
and one tail, period.
along the edges is another sign of authenticity. It takes centuries
of incessant usage and handling to wear away fluting. If a rare coin
appears without fluting, it’s either ridiculously old or fake.
coins minted in certain places at certain times follow specific
recipes of metals and alloys combined in specific ratios. Seasoned
buyers and collectors know this, so they gauge authenticity by
measuring overall weight, mass and density. Recall that an alloy’s
density is its mass divided by its volume.
coins have standard mass measurable with a balance. Their volume can
be obtained via the same formula used to find the volume of a
cylinder: V=piR2H, where H is height or thickness and R is the
radius. Buyers follow these and other protocols when appraising rare
and modern coins made of gold or other alloys. All of these tests and
configurations are just as easy to do at home.
For more info on Chicago coin buyers, visit
Chicago Gold Gallery online,
and see how this seasoned, experienced team can offer the most
competitive cash amounts for coins.