Coin collecting

Coins may be collected as objects in their own right for a number of reasons.

The scientific study of coins is a branch of numismatics.

Coin collectors usually select an area of interest and collect coins from that area. Popular interests include coins of a certain nation, ancient or medieval coins, world coins, and error coins. Often within these interests people choose even more specific specialties.

A collector of national coins often chooses coins of their own country. Popular ways to collect national coins include collecting one of every date and/or mint mark for a particular series (date/mint mark sets), and collecting a representative coin of each different series (type sets). For example, a date set in Great Britain may include one Queen Victoria large penny for each year, 1837-1901. In another example, a US type set might include an example of each varity of each denomination produced. Many collectors of national coins create unique combinations of date, mint mark, and type sets.

Collectors of ancient and medieval coins are usually more interested in historical significance than other collectors. Collectors of ancient and medieval might collect Roman, Greek, Celtic, Parthian, Merovignian, Ostrogothic, Jewish, or other coins. Specialties tend to vary greatly, but an example is collecting coins of a particular emperor.

Collectors of world coins are often interested in geography. They can travel the world vicariously through their collecting. A popular way to collect world coins is to collect representative examples from every country.

The collecting of error coins is a modern invention. Collectors of ancient and medievel coins shun coins with errors because ancient and/or medieval coins are unique (they didn't have mass-production back then). Collectors of modern coins seek collect them because they are so rare today. Types of coin errors include double strikes, off metal coins, off center coins, clipped coins, and mules (different denominations on two sides of one coin).

In coin collecting the condition of a coin is paramount; a high-quality example is often worth many times as much as a poor example. Collectors have created systems to describe the overall condition of coin. An older system describes a coin from poor to uncirculated. A newer system adds a 0-70 number grade, where 70 is a perfect coin. Several coin grading services will grade and "encapsulate" coins in an labeled, air-tight plastic holder. Two highly respected grading services are the Numismatic Guarantee Corporation (NGC) and Professional Coin Grading Service (PCGS). However, professional grading services are the subject of controversy because grading is subjective - a coin may receive a different grade by a different service, or even upon resubmission to the same service. Due to potentially large differences in value over slight differences in a coin's condition, some dealers will repeatedly resubmit a coin to a grading service in the hopes of a higher grade.



In the News

Copyright Claim Erases 'Here Comes Another Bubble' Parody Video From Y
A creative clip titled "Here Comes Another Bubble" gets popped due to a copyright claim from an unnamed third party.

Honey Bee Genome: Social Insect Creates Buzz For Agricultural, Biomedi
A research consortium, supported by the National Human Genome Research Institute (NHGRI), one of the National Institutes of Health (NIH), have announced the publication of a high-quality draft genome sequence of the western honey bee, finding that its genome is more similar to humans than any insect sequenced thus far.

Selling Homeowners a Solar Dream
A startup promises to install solar panels on your roof for free, and sell you the power for pennies. Is it a revolution, or clean-energy vaporware? By Marty Graham.

Are U.S. Flu Death Figures More PR Than Science?
US data on influenza death may be more PR than science, argues a Harvard University graduate student in this week's British Medical Journal. The Centers for Disease Control and Prevention (CDC) acknowledges a difference between flu death and flu-associated death yet uses the terms interchangeably, writes Peter Doshi. Statistical incompatibilities also exist between official estimates and national vital statistics data.

If Successful, Moxifloxacin Could Be First New Treatment For TB In Mor
A Johns Hopkins infectious disease expert will lead two international studies of the effectiveness of the antibiotic moxifloxacin as a new treatment for tuberculosis, the highly contagious bacterial disease that kills more than 2 million people worldwide each year and is the leading cause of death of people living with HIV and AIDS. Moxifloxacin is currently approved in more than 100 countries, including the United States, as a treatment for bacterial respiratory infections, such as bronchitis, sinusitis and pneumonia.

Mayo Clinic Discovers 'New Pathway' Against Pancreatic Cancer
Pancreatic cancer kills 30,000 Americans every year. Not only is there no cure, but there are no effective treatments. That may change if a new finding by Mayo Clinic researchers continues to show promise.

New Model For Autism Suggests Women Carry The Disorder And Explains Ag
A new model for understanding how autism is acquired has just been developed. Researchers analyzed data on autism incidence and found a previously unrecognized pattern. The pattern can be explained by assuming that spontaneous germ-line mutation is a significant cause of the disorder.

New Test Improves Detection Of Liver Cancer
Cancer of the liver is very difficult to detect, and it is a major cause of death in Asia and Africa, with rising incidence in Western countries. Researchers have now developed a test to detect liver cancer in early stage. A blood sample is the only requirement for the test. The test enables accurate detection of liver cancer in over 50 percent of the cases.

NIST Assists With Testing Crash Avoidance System
Researchers at the National Institute of Standards and Technology (NIST) are assisting the Department of Transportation (DOT) by developing tests for a crash avoidance system that could substantially reduce the number of rear-end, road departure and lane change accidents. About 1,836,000 such accidents occur annually, or 48 percent of police-reported cases a year.

[Odd] A Romanian couple has named their son Yahoo as a sign of gratitu
Daily Libertatea said on Thursday Cornelia and Nonu Dragoman, both from Transylvania, met and decided they were meant for each other following a three-month relationship over the net.They married and had a baby this Christmas, whom they decided to name after one of the worldwide web's most popular portals."We named him Lucian Yahoo after my father and the net, the main beacon of my life,"Cornelia Dragoman was quoted as saying.


MP3 Music Downloads

Preview songs, Download Free Music,Burn CDs at ITunes.com
iTunes_RGB_9mm

 


Google




InformationQuickFind.com - Find Information Fast

Links