Anthracite is a better type of coal than bituminous, anthracite is the best type of coal because it is the purest type of coal as it has the highest amount of carbon content p â¦ resent in it. It is made up of 90-95% of carbon content, so, it has a higher calorific value and burns without a smoke.
The NGC Coin Price Guide is a complete catalog of coin values for US and World coins from 1600 to date, compiled from a variety of numismatic sources. Sign In Join
If NGC graders believe that a coin is likely not genuine but its research is inconclusive, the coin will be labeled Questionable Authenticity and not encapsulated. The grading fee will be refunded less a $5.00 processing fee. For more information, click here.