NeW YoRk ErrOr Quarter New Find 20001 -

Thanks for posting the obverse for me!

 

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Well, that would be a fitting obverse I mean.

 

Until the buyer gets here anyway ...

 

Merry ChristMas.

 

That's actually pretty cool Jral! Merry Xmas to you and yours!

 

Thanks it makes a cool desktop backround you could even add your own coin if you wanted to. I just figured that would be a good backdrop for a coin with a giant metal statue on it...

 

This coin is really neat to practice taking photos of coins. Sometimes you get full white wash luster where you cant even see the coin. Then if you change the angle or lighting the plated shiny spots will light up and shine while the dark clad metal remains dark and everything inbetween as you can see in the pictures.

So what Im thinking is the non layered clad surface with the striations is what the cladding looks like on the coinstock before the blanks are made and before the shiny surface is added. Then the blanks goes through the upsetting mill. After that the coins go through some process that gives the planchet the shiny white metal surface. is there a seperate sintering process they use to coat the blanks/planchets with the shiny surface before annealing.. Sintering is a way of adding metal powder/dust to another metal suface without the two metals getting hot enough to melt but hot enough to bond .I would say based on looking at this coin that they either use a sintering process or an electroplating process seperate from annealing.

Now that im thinking about it i would have to guess that the actual coinstock gets plated somehow before the blanks are even made so there is really three layers. The core, cladding and the plating...think about how the edge of a clad coin almost always shows most of the core if they plated the planchets after they were cut you wouldnt see the core because the edge would be plated to. If they plate the clad coinstock then cut the coins it would leave the core exposed on the edge. Maybe the coins go through some polishing process down the line like the drum polishers that use micro bb's.but i dought they are coated after they are cut based on how this coin looks and some others i have seen. Look how thin the spots are. Its almost like the striations are there to create a good surface for the metal dust to hold onto filling in the tiny groves of the striations. I know some people think they are from descaling brushes or something but i think they are engineered that way. I would think plating the clad coinstock its self would be less problematic then a drum or oven full of coins and you would get a nice uniform coating almost every time. I am now thinking that they probably do electroplate the coinstock sheets because all you have to do is dip the sheet it in this then dip it in that then you done. If not electroplating then maybe they use a sintering process on the coinstock its self that would make sense to because all they have to do is stack up the sheets in the sintering oven with spaces or deviders and circulate the metal dust around. Any one have any thoughts on this or has it been figured out in other threads?>
So what is it do they coat the planchets in some kind of sintering oven? If so do they take the time to lay them all flat and then flip them over with a spatula when there done.lol do they tumble them in a annealing drum then polish.? If so why is the core metal always exposed on the edge. Or do they coat , plate or use some kind of sintering process on the coin stockits self and then just polish and annneal the planchets later. Do they even use a polishing process on these clad coins? Does annealing have anything to do with the coating on the coins or is that just used to soften the planchets before strike?

 

I hope nobody reads Jral's posts and takes them seriously, lol. His blurb above is priceless.

 

Best answer.

I'm sorry that I looked at this thread.

Hopefully, I will be able to forget it shortly

 

GONE!!

 

Looks as of a heat treatment. A small washer on top the coin, and then, using a welding torch, a quick pass over the coin and washer, leaving what you see. I have welded for many years, and have seen the same effect.

 

Jral, another great theory could be that the mints are really at the North Pole, beside Santa's castle. Santa subs out a group of elves and they paint that shiny surface onto each coin individually. Sounds plausible, right?

C'mon man!

 

What about this what is it and curious

 

It's a toned quarter. It's nothing special.