Mike824

On 9/4/2023 at 10:37 PM, scarecro said:

I believe that trying to reason with him is akin to reasoning withTrump. Might as well just beat your head against a brick wall.

Well, now you've gone and shown your 🫏. Not a good idea to bring politics into a coin forum.🤦‍♂️

Many of us have been burned by a counterfeit purchase at sometime in our lives. With PayPal you stand a very good chance of recovering your loss. Keep us posted.

I used to get coins from Littleton when I was a kid back in the 70's. It's definitely a sad day. I suppose it's a sign of the times we live in. Littleton is stooping to a new low in order to survive and hopefully breathe new life into our ever shrinking hobby. I hope they are successful. We can educate the folks that buy into the 'artificial' hype down the road. 

There are CUD groups on FB that can give you a good idea of value. I'm a member of several of those CUD groups. For those only chasing the perfect coins CUDs won't have much value past the curiosity. For those who search for CUDs they'll have much more value. I love CUDs, breaks, chips and building progression collections.

On 12/20/2022 at 8:30 PM, B.C said:

Sheep 🐑 once one goes down the wrong road all go down the wrong road Kurt go get sheared don't you have packages to deliver 

So let me understand correct a coin graded from ngc as mint error pf67 Struck thru is nothing more then corrosion and damage ok got it thanks for all the help you guys are great 

 

 

 

Dude, it's corrosion. Period.

On 12/22/2022 at 4:51 AM, EagleRJO said:

The attached ledger data from the 1930s may help

@EagleRJO PERFECT! Thank you!

On 12/22/2022 at 2:07 AM, JKK said:

I recommend using the proper terms for the metal disks that are struck with dies to produce coins: planchet (most modern) or flan (generally more archaic). We know what you mean, but it never harms the cause to get the terminology correct. I would not have expected you to know this, so none of this is criticism--just education.

@JKK I appreciate your response, but Blank is the correct term. The metal disk is called a Blank when punched from the roll. It becomes a Planchet when it goes through the annealing and upsetting process. Upsetting is where the coin to be gets a rim and the dimensions are first changed. I need the dimensions of the Blank before it becomes a Planchet.

Thanks for the search, but what I need are the dimensions of the blank, specifically circumference/radius and height.

Hello,

I'm looking for the dimensions of pre-1964 coin blanks, the circumference and height specifically. What started out as a simple/not-so-simple math question: Find the weight of a 1964 Kennedy Half Dollar using the density of silver and copper, and it's radius and height. Fairly straight forward, all the info you need to solve the problem is easily found with a quick Google search. 

Density of Silver: 10.49 g/cm^3
Density of Copper: 8.94 g/cm^3

Volume of the 1964 Kennedy: 1.58cm^3 = 3.14156*15.31*15.31*2.15 = 1583.2mm^3 = 1.5832cm^3

Weight/Mass(Earth) then comes down to the formula Mass = Density x Volume: 1.5832*0.9*10.49 + 1.5832*0.1*8.96 = 14.947+1.485 = 16.365g

So the weight of a 1964 Kennedy Half Dollar is 16.365g. Except it's not, it's 12.5g. Turns out the math is right, but the inputs were not.

Sooo... I need to find the dimensions of the blanks used to produce the 1964 Kennedy Half Dollars. And that has not been an easy Google search. Can anyone tell me what the dimensions of the blanks used to produce the pre-1964 coinage is and the source?

Thanks