Have caliper? Have Bust silver coins? Can you do me a favor?

STONE

I am working on a coin article and would like to know the approximate thickness, in millimeters, of early bust silver denominations.
I do understand that coin thickness could vary subtly. If possible, I would like answers to the hundredth decimal point.
Edited to add: I am only looking for EF-MS pieces...where wear is not much of a factor.

Thanks in advance for any information you can provide. I will proudly cite your assistance in my article.


FH = Flowing Hair
DB = Draped Bust
CB = Capped Bust
OC = Open Collar
CC = Closed Collar


1) FH/DB Half-Dimes
2) CB Half-Dimes = 1.9 mm (thanks drwstr123)

3) DB Dimes
4) CB Dimes

5) DB Quarters
6) CB OC Quarters
7) CB CC Quarters

8) FH Half Dollars
9) DB Half Dollars
10) CB Half Dollars

11) FH/DB Dollars

MsMorrisine

I bet they vary more by certain O numbers

coindeuce

"I do understand that coin thickness could vary subtly."

I do believe the difference in thickness between a MS example and a AG3 example will be more than subtle for early, non closed collar coinage. Obviously, reporting sanctioned grading standard grades of each measured coin would matter.

I own a Starrett precision analog vernier caliper, if anyone wants to volunteer coins for me to measure.

STONE

<< <i>"I do understand that coin thickness could vary subtly."

I do believe the difference in thickness between a MS example and a AG3 example will be more than subtle for early, non closed collar coinage. Obviously, reporting sanctioned grading standard grades of each measured coin would matter.

I own a Starrett precision analog vernier caliper, if anyone wants to volunteer coins for me to measure. >>


Thank you for pointing out the difference that wear can have on coin thickness. I have edited my post accordingly.

brg5658

Given the diameter, weight in grams, and the known composition of these coins (and the composition's respective density), you could easily calculate the average "thickness" of the planchet.

MsMorrisine

That would be theoretical blank thickness at best

Post-rolling and post-striking reality is a different story.

The measurements would need to be taken on the same place in the fields or formed rims of the comparison coins

brg5658

double post.

brg5658

<< <i>That would be theoretical blank thickness at best

Post-rolling and post-striking reality is a different story.

The measurements would need to be taken on the same place in the fields or formed rims of the comparison coins >>




There is nothing "theoretical" about it. It is the average thickness by simple mathematics, chemisty, and physics.

What on earth do you think rolling has to do with the density of an alloy?

Are you implying that striking a coin changes the density of a metal alloy? LOL

MsMorrisine

I'm surprised you haven't gotten some numbers from anyone yet.

It's not been off the first page all night.

drwstr123

CBHD 1.9mm