|Product Name||American Silver Eagles: A Guide To The U.S. Bullion Coin Program|
|Category||Book / Magazine / Publication|
|Amazon.com||Buy on Amazon ~ 0794837255|
|Price New||14.61 US Dollars (curriencies)|
|Price Used||6.84 US Dollars (curriencies)|
|Width||8.6 inches (convert)|
|Height||0.8 inches (convert)|
|Length||11 inches (convert)|
|Weight||36.8 ounces (convert)|
|Author||John M. Mercanti, Michael "Miles" Standish|
|Features||Used Book in Good Condition|
|Long Description||American Silver Eagles are hugely popular coins — a third of a billion have been sold since 1986. They're collected by numismatists, stockpiled by investors, and treasured by silver buyers throughout the United States and around the world. Until now, there has been no encyclopedic book-length study made on our nation's cornerstone bullion program. In "American Silver Eagles, " no less an expert than John M. Mercanti — 12th chief engraver of the U.S. Mint, and the designer of the coin's reverse — shares his unique insight and perspective on these beautiful pieces of Americana. A foreword by Michael Reagan (whose father, President Ronald Reagan, signed the legislation authorizing these historic coins) presents the book and its distinguished authors. In the introduction, Mercanti offers an insightful overview of his own career within the Mint, especially as it relates to the American Silver Eagle. Chapter 1 discusses the "why " and " how " of the United States entrance into the modern bullion market. Chapter 2 is Mercanti's behind-the-scenes history of the American Silver Eagle, its design development, the minting process, and other elements of the coinage series. Chapter 3 presents a detailed date-by-date study of each American Silver Eagle, plus varieties and sets, with high-resolution photographs, rarity information, values, certified-coin populations, surface and strike characteristics, market details, and move. In chapter 4, you get an illustrated overview of other coins in our nation's bullion program, setting the American Silver Eagle in the context of a larger constellation of silver, gold, platinum, and palladium coins. Several appendices compile the book's data in convenient chart format for easy coin-by-coin comparisons; a glossary of numismatic terms offers guidance to the beginning and intermediate collector and a refresher for the advanced numismatist; and the index provides a convenient resource for looking up information. These diverse elements — technical and artistic, historical and current, market-driven and hobbyist — combine to make "American Silver Eagles" a valuable addition to any collector's or investor's bookshelf.|
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There are many types of barcode scanners out on the market ranging from inexpensive wonds that look like pens all the way up to retail table scanners that are very fast and accurate. The scanner you select depends on your needs which is dictated by the type of barcodes you will be scanning, the volume and speed at wich you need to scan.
The wand or pen scanner is one of the least expensive scanners in most cases. Although these are easy to use, they are limited in speed and accuracy of what they can scan. These are wonderful for low volume environments where you need to scan simple barcodes. These are used by pressing the pen to the paper and drawing it across the barcode. The light at the end of the pen registers the light and dark bars as the pen passes over them and transmit the data to the receiver. The main drawback to these scanners are the speed at which they can scan with any accuracy. It often takes a little practice to get the timing correct. Too slow or too fast and the barcode won't be recognized. This can limit the number of codes that can be scanned.
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For situations where high speed, high accuracy scanning is required, a built-in table scanner is required. These are the types of scanners you see at the grocery store. The products are quickly passed over the scanner which often has multiple scanning beams and can read the product form multiple angles. This reduces the need for the person operating the scanner to worry about the exact distance or angle of the barcode to the scanner. This type of scanner is also used in industrial situations where items are scanned as they fly down the production line. These industrial versions are often larger and more robust in their design but they have the same basic functionality built into them.
All of the scanners we have talked about so far are limited to 1D barcodes. These are the codes that are made up of lines and are read as the scanner reads in the dark and light bars. The main difference between the scanners is the speed and accuracy and of course the price. But in general they all serve the same basic function and operate in the same basic way.
There is another type of barcode scanner. These can usually scan the 1D barcodes just like the previous models but they can also scan the 2D barcodes such as the QR Codes which store a great deal of data in a tightly packed area. These work not by sweeping across the barcode in one direction, but by looking at the entire code at one time both vertically and horizontally. This type of scanner can come in many forms. You may even have one of these built into your phone. These full image scanners come in many price ranges. The version you have on your phone may have been free or cost only a couple dollars. Larger versions are available as hand heald, desktop and even industrial scanners. Just like the 1D scanners, what you scan and how often you scan will determine which type of scanner you need. For the average individual the low end scanner is normally enough but businesses will find that more reliable and faster scanners are a better investment even though they are more expensive.
As with any product, it is important to determine your need before you make your purchase. And whend possible it is a good idea to test out the scanners before spending a great deal of money.