PRECIOUS METAL WEIGHTS



Listings of weight, fineness and actual silver (ASW), gold (AGW), platinum or palladium (APW) content of most machine-struck silver, gold, platinum and palladium coins are provided in this edition. This information will be found incorporated in each separate type listing, along with other data related to the coin.

The ASW, AGW and APW figures were determined by multiplying the gross weight of a given coin by its known or tested fineness and converting the resulting gram or grain weight to troy ounces, rounded to the nearest ten-thousandth of an ounce. A silver coin with a 24.25-gram weight and .875 fineness for example, would have a fine weight of approximately 21.2188 grams, or a .6822 ASW, a factor that can be used to accurately determine the intrinsic value for multiple examples.

The ASW, AGW or APW figure can be multiplied by the spot price of each precious metal to determine the current intrinsic value of any coin accompanied by these designations.

Coin weights are indicated in grams (abbreviated “g”) along with fineness where the information is of value in differentiating between types. These weights are based on 31.103 grams per troy (scientific) ounce, as opposed to the avoirdupois (commercial) standard of 28.35 grams. Actual coin weights are generally shown in hundredths or thousands of a gram; i.e., 0.500 SILVER 2.9200g.WEIGHTS AND FINENESSES As the silver and gold bullion markets have advanced and declined sharply over the years, the fineness and total precious metal content of coins has become especially significant where bullion coins - issues which trade on the basis of their intrinsic metallic content rather than numismatic value - are concerned. In many instances, such issues have become worth more in bullion form than their nominal collector values or denominations indicate.

Establishing the weight of a coin can also be valuable for determining its denomination. Actual weight is also necessary to ascertain the specific gravity of the coin's metallic content, an important factor in determining authenticity.

TROY WEIGHT STANDARDS
24 Grains
1 Pennyweight
480 Grains 1 Ounce
31.103 Grams 1 Ounce
 
UNIFORM WEIGHTS
15.432 Grains 1 Gram
0.0648 Gram 1 Grain
 
AVOIRDUPOIS STANDARDS
27-11/32 Grains 11 Dram
437-1/2 Grains 1 Ounce
28.350 Grams 1 Ounce