Hi - Couple of Quick Questions, #1 - What is the Multiplier used to calculate the Value of 90% silver coins ? ie What times Face Value = Value #2 - Face Value Multiplier for 40% Coins ? #3 - For Gold, How do we determine the "Per Gram" Value Based on the Ounce Value ? thanks in advance
find the amount of silver or gold in the coin... http://www.mountainviewcoins.com/gold-silver-content-us-coins.php Mercury dime is 0.08038 so it would be worth $1.6076 if silver was at $20.00 you won't get that much though - you would most likely get 60-70% of melt. -steve
he asked how to do it - it would be good to know if you ever came across some world coins that had silver content - i have several that are worth a good deal from dealer junk bins because i knew what i was looking for... -steve
They do have something on Canadian coins, because I come across Canadian 5¢ coins from before 1981 when they were more nickel than now, and have some Canadian silver.
Step 1: Multiply the weight of the coin by the percentage of precious metal. For example a 6.25g .900 pre-'64 Washington quarter has an actual silver weight ("ASW") of 5.625g (6.25 x .9); a 5g 14k gold coin has an actual gold weight ("AGW") of 2.9167g (5 x 14 ÷ 24). Step 2: Divide the total weight in grams by 31.06 to get the weight in troy ounces. For example 13 silver Washington quarters have a combined ASW of 73.125g which equals 2.35 troy ounces. Step 3: Ascertain the current bullion value of silver/gold; multiply your ounce total by that amount; deduct 10-20$. You now have the probably sale value. For example if Silver is at $19.85 and you have those Washington quarters, your potential sale is $37.32-41.98 ($19.85 x 2.35 x .8 or $19.85 x 2.35 x .9). It's no big problem to do the calculations, but http://www.coinflation.com/ really is quicker!
Much easier way is to divide the price of silver (troy ounce) by 1.38 for dimes, quarters, and halves, or 1.29 for dollars. The result is the value of $1.00 of 90% silver coin. Obviously, 4/9 of that result for the 40% silver coinage. hontonai - minor correction to you calculations - 1 troy ounce = 31.11 grams.
Take spot silver and minus $1.00. Then multiply by .715. So at 20.00 it would be like this. 19.00 x .715 = 13.585 This should be around what most dealers are paying for silver on the high end. Local coin shops are going to be paying under this as that would be what they are getting paid. For gold I use a pennyweight for measurement. 20 pennyweight (dwt) per oz and 31.1 grams per oz. Take spot times decimal for scrap gold price at each karat weight 10k .0188 14k .0262 18k 0.342 So 14k is like this . Spot at 980 980 x .0262 = 25.676 14k gold is worth roughly 25.67 per pennyweight. If you want that in grams multiply by 20 then divide by 31.1 which gets you at 16.51 This is also what most dealers are getting for their gold and will be buying back of that but it will give you a rough idea. Large nationwide refiners are at 10k .0197 14k .0272 18k .0352
