Help- What weights 31.24 grams ?

LALASD4

I have a blank dollar size T1 planchet that weights 31.24 grams, anyone know what this is?

Thanks.

kranky

According to the Redbook, the heaviest US dollar coin was the Trade dollar at 27.22 grams.

LALASD4

Right, I saw that too, this is 1.1 oz? what could this be?

michael

31.1 grams is one troy ounce so this 31.24 gram planchet is really close to one troy ounce


michael

LALASD4

Thanks, I never thought of that, so what weights 1 troy oz. ? I am not 100% sure but I think this is silver.

291fifth

It is probably an unstruck silver round blank.

LALASD4

Unstruck silver round blank ? Is that the 1 oz. Silver Eagle?

michael

i do nor know i need more information

michael

richbeat

The silver eagles weigh 31.101 grams. Do you have a blank or a planchet? I assume by your mentioning it as a T1 that it is a blank. It might be a blank intended for a silver eagle. I think 291fifth was referring to a blank intended for a silver round. It could be that, as well. If you could provide more information about it, that might help more to determine what it is.

LALASD4

I think this must be a T1 Planchet for a American Silver Eagle.

I got this from the mint :

The American Eagle Silver Proof Coin contains 99.9% silver. The one ounce coin has a $1 face value and is 1.598 inches in diameter, contains 0.999 silver troy ounces and weighs 1.0000 troy ounces.

The weight match and its diameter is 1.5 inches, but it unstruck and a T1 planchet.

Could that explain for the .098 in. difference in diameter?

LALASD4

I guess it is a blank, no rim. Thanks

richbeat

The force of the strike on the planchet (tons of pressure) would cause it to spread out, so that would explain the difference in diameter, I would think. I do not have the figure on how many tons of pressure is required to strike a silver eagle, but it's a lot. Just in case you don't know, when the round discs are punched out of the metal strips, they're called blanks. They have not yet been prepared for striking. After they go through the upset mill (which produces the rims) they are then called planchets; they are ready to be struck. When the planchet is struck, it becomes a coin. Referring to Type 1 and Type 2 planchets is actually not correct. You could say Type 1 blank and Type 2 planchet, or just blank and planchet. The Type 1 and Type 2 designations are really not necessary.

richbeat

You got it before I could post! I didn't know if you knew or not.

LALASD4

Thank you very much for everyone's help.

In conclusion this is an American Silver Eagle blank which weights 1 troy oz. and has a diameter of 1.5 inches.