I have a subscription to Coin World and really enjoy the magazine. The guide looks interesting, albeit I'm sure the prices are just as far off as they normally are. Have they published this in that past? If they have published this in the past, could we hear from those that bought it? Do you think it is worth getting? http://www.coinworld.com/dealers/amos-press/2013-coin-world-price-guide/ Description: The 2013 Coin World Price Guide provides a wealth of information and insight with more than 40,000 values in as many as 20 different grades for all U.S. coin series. Technical information is also provided within the valuing section for each coin series including size, weight, composition and specific gravity. There are also chapters on mintages, Proof and Uncirculated Mint sets and commemorative coins. Information is also provided on grading, storage and preservation and U.S. coinage history. This year’s special feature article is on Coin Investing 101. Manufacturer: Coin World $6.99 USD
They have published it for many years, I have a 25th anniversary edition signed by most folks who worked on it. Dates to the 1970's.
If a person has a specific gravity device, the listing of coin's specific gravity values would be very useful. The sp. gr. of any combinations of metals such as 90% silver , 10% copper can be determined by calculation, but if the values are determined empirically, it would eliminate most tolerance in the raw rolls
No. Again, no. Yes you can do as Jim said and calculate it. But, you have to assume that the coin is indeed what it is supposed to be. And doing that wipes out the reason for doing a specific gravity test to begin with. With coins, about the only reason I know of to do a specific gravity test is as one of the steps to help establish if a coin is genuine or not. So unless you actually get the coin wet ( do the test in other words), you don't know.
Is this a world coin guide used for identification purposes? That might be good. The library has world coin books to, you could try there. Although price guides are only that, a guide, they can give you a perspective on what coins at what grade are worth more than others.
I guess $7 is a decent price, but I never have much faith in the prices given in a guide produced annually. As for guessing trends, it's about as accurate as the Farmers Almanac most of the time. I'd stick with the monthly publications, and use their free web price guide if you feel the need.
