Realcent.org

Does anyone know of a web site that has a reverse silver calculator? Say you would like to know how high the price of silver would need to go for your 90% half dollar to be worth $15.00. You could enter the denomination, type in $15.00, and it would produce the answer: $41.50 an ounce.

If not, maybe I'll put my programming skills to work on creating one!

Its in the back of all redbooks

Spot x .715 gives the current spot price for 1.00 face value of 90% so you can divide that by 2 to get what it is for half dollars. Just change the spot price until you reach the desired result.

$42 spot would get you to $15 per half dollar.

Not exactly what you are talking about, but on Coinflation.com you can change the numbers in the silver calculator to do simular.... I do it alot at times...

Thank you. I remember seeing that section in the back of a Redbook, but as I recall it was not overly precise. I understand how to calculate, was just looking for an easier way to do it. I think we can all agree that if silver goes above $40 an ounce we'll be in good shape!

It's been over a decade since I took any type of math class, but this should hopefully work (assuming the number 93_Confirmed gave is correct):

($M x 2)/.715 = Y

$M = Is the desired value of the half dollar.
Y = What the spot price would need to be.

If you wanted the value for a quarter, you'd multiply $M by 4 instead of 2. If you wanted the value for a dime, you'd multiply by 10.

For an example (using a half dollar worth $15):

(15 x 2)/.715 = 41.9580419...

So, the spot price would need to be about $41.96 for a half dollar to be worth $15.