For the error experts and others

BLUEJAYWAY

Does anyone know of the existence of any clad blanks, but w/o the clad covering? In other words a copper blank the same size as for an intended use for a dime,quarter,half,or dollar? If so how rare of an occurence would this be? And how is the bonding of the clad layer to the copper core achieved?

jmcu12

Do you mean a planchette where the clad layer is missing? Copper on one side and nickel on the other?

Coinstudy

Actually its a layer of nickle,a layer of copper,a layer of nickle.Sheets of these layers are first sent through rollers then the rolled product are cut into strips and then the blanks are cut from these strips.The blanks cut from the strips are then annealed to bond these layers together. I do have some type 1 dime blanks and you won't see these often because after typeI1 their on there way to being a coin.

The only thing I've heard of is in the rollers these sheets can slip and on the ends of the strips cutcan result in a missing layer or layers of material and blanks can be cut fromthese missing layer or layers.This dose not happen often and when it dose it can result in for example a coreless error coin(no copper).

These are usually caught in insepection trough the whole process but can slip trough.All kinds of room for errors in the process.Hope this helps.

errormaven

I've seen several clad dime and quarter planchets with a partially missing clad layer on one face. I don't recall seeing any with a completely missing clad layer.

MsMorrisine

The outer layers are 75% copper-25% nickel over 100% copper
The sheet is already bonded before being cut
Annealing does not bond. It is for softening the metal before striking.

19Lyds

<< <i>The outer layers are 75% copper-25% nickel over 100% copper
The sheet is already bonded before being cut
Annealing does not bond. It is for softening the metal before striking. >>

Thank You!

GrumpyEd

Check out the Coinworld article:




Article on Coinworld

CaptHenway

<< <i>Does anyone know of the existence of any clad blanks, but w/o the clad covering? In other words a copper blank the same size as for an intended use for a dime,quarter,half,or dollar? If so how rare of an occurence would this be? And how is the bonding of the clad layer to the copper core achieved? >>



It is hypothetically possible that when the three coils of metal (two of copper nickel with one of pure copper in the middle) are being rolled together and bonded that the copper center will last beyond the ends of the two copper-nickel layers, but I have never seen a blank of planchet that I believe was produced this way. The people who make the coils of clad material for the Mint routinely trim off the ends of the coils to maintain a uniform product.

I have seen flat, blank copper disks the size of a quarter that were allegedly made to pass in vending machines. THey had reeded edges so that you would not notice them stacked in a roll of quarters. They appeared in the 1970's, reportedly in New Jersey.

Other copper slugs are possible. Unless it has an upset rim, I would automatically assume that a flat copper slug was privately made.

TD

Coinstudy

I thought the nickle part was 100% nickle, learn something every day.There are some type1 clad dime blanks on ebay so one can see this step in process.A cool teaching example and not many will ever see a type 1 clad blank.I bought a few for the rarity.

coppercoins

The metal is properly spelled "nickel" - not "nickle".

FredWeinberg

As far as I'm aware, there are no known
Blanks or Planchets that are either 100%
copper for dimes/quarters/halves/dollars,
but there are a few of these types known:

1. 1964 Dimes on pure copper planchets
(don't have the weights handy)

2. A Quarter was reported, struck on just the
copper core - thinner than the normal
quarter, but not the normal thickness,
like the 1964 Dimes mentioned above.

3. I own a Kennedy Half struck on a copper
core - the only one known of this denim.

4. A Quarter Planchet is known with one
side missing the outer clad layer.

The Reeded Edge Copper Quarter-Sized
Planchets that Tom mentions were supposedly
made to be used on subway turnstiles in
New York, and I guess New Jersey. It was
said that the Mob produced them, which
is cute for the story, but I've not found any
confirmation of it from any source.

I still see them, a few times a year, either in
error collections I buy, or from someone who
found one in their change and thinks it's a
rare error of some type.

The most common type of planchet error like this
is when the outer clad layer of the coin detached
before striking; detached layers after striking aren't
as common, but also don't look anywhere near as
nice as the coins struck on the outer-clad-layer-missing
before striking, imo.

There are also blanks punched out from the beginning
or end of the strip, where the cladding overlaps each
other due to the copper core 'running out' during the
rolling, and before the bonding, process.

BLUEJAYWAY

Thanks for all of the mint process info. and especially the history of who(m) may have created this type of "error".