Is it possible to accurately weigh a coin inside a PCGS holder?

ColonialCoinUnion

I figure all I need is the exact weight of an empty holder, and the weight of the specific grommet size inside, and I'm good to go.

Right?

ziggy29

<< <i>I figure all I need is the exact weight of an empty holder, and the weight of the specific grommet size inside, and I'm good to go.

Right? >>

Depends on the tolerance for the weight of the stuff that comprises the slab itself. For example, if the plastic, the label and the grommet are quality controlled to within +/- .05 grams, you might be able to do this. If the tolerance is +/- .50 grams, on the other hand, this breaks down.

Cladiator

I use this method to weigh my half dimes. I've got a slab that I cracked an 1837 half dime out of and I use that. Works pretty good I think. I'm sure it's not extraordinarily accurate but it's accurate enough for my purposes.

ColonialCoinUnion

<< <i>Depends on the tolerance for the weight of the stuff that comprises the slab itself. For example, if the plastic, the label and the grommet are quality controlled to within +/- .05 grams, you might be able to do this. If the tolerance is +/- .50 grams, on the other hand, this breaks down. >>



I figured as much -

So does anyone know if the various component weights are consistent?

Longacre

Just curious-- for the coin you are weighing, how much tolerance do you have to play with in order to determine authenticity? If the coin's tolerance is close to the production tolerances for the plastic slab parts, then it can get dicey.

ColonialCoinUnion

Its not a question of authenticity per se -

I am trying to definitively match a slabbed coin to an old catalog listing of the same type in which the weight was written. The photo alone is not 100% definitive.

Of course, I have no way to know if the weight listed in the old catalog was precisely measured either.

kranky

<< <i>

<< <i>Depends on the tolerance for the weight of the stuff that comprises the slab itself. For example, if the plastic, the label and the grommet are quality controlled to within +/- .05 grams, you might be able to do this. If the tolerance is +/- .50 grams, on the other hand, this breaks down. >>



I figured as much -

So does anyone know if the various component weights are consistent? >>



Might be easy enough to verify on your own. Weigh 50 slabs of the same type and containing the same type of coin, and see what the variance is.