One Last Time - CLARIFICATION Please... Anyone??

AskRaq · April 18, 2007 6:48AM

Okay, I have asked about this in a couple of threads, with links to auctions showing examples... and I still have no clue.

Can anyone give me a Definitive: (1) Description, (2) Explanation & (3) Comparison Pictures

Regarding the GW:
(a) Sintered Planchet
(b) Unburnished Planchet
(c) Missling Clad Layer Planchet
(e) any other surface anomaly

Thank you wise & knowledgeable responders!!

DorkGirl · April 18, 2007 7:17AM

I just used the search feature here and found sintered

Here's one I found on unburnished unburnished

Missing the clad layer refers to the copper nickel that is sandwiching the copper.

Try the search feature, you can read for months!!

AskRaq · April 18, 2007 9:14AM

Thanks DG for trying to help... but even with the many threads, I can't seem to get a definitive answer.
A lot of posts have pic links to eBay - where I find lots of these being claimed - but many eBayers are unsure of what they have and pick a "term" out of the blue, or follow suit and post what someone else sayas it is. And a lot of the threads are other posters asking the same questions as I... but no one seems to have a complete/accurate answer with comparison photos to help us (wwe ho are clueless about how a "definition" of a surface 'error' should actually LOOK on the coin compared to a normal coin.)

StrikeOutXXX · April 18, 2007 9:58AM

A sintered planchet occurs when copper dust/dust from other coins collects on a planchet during annealing, which results in the planchet to become dark from the burnt dust.

The eBay link in your other thread looks about right from those pictures, there is often an impression of toning going on. Here are a few more:

Sintered Planchet 2004-D Nickel
2000-D SIntered Planchet Quarter

Burnishing in a process of coating and polishing with steel pellets. Missing one/both of those steps can become an unburnished planchet.
eBay link with a good explination and picture

Missing clad layer is described as: (a google cut and paste)
What is a missing clad layer error? Dimes, Quarters, Half dollars, SBA dollars, and even the new Sacagawea dollars are all made using planchets containing a solid copper core with other alloys bonded to the exterior of this copper core, creating a metal sandwich. The missing clad layer error occurs when one side (or both sides) of this metal bond peels off exposing the copper core.

Here are a few examples
NGC Certified Washington Prez MCL

State quarter without clad layer:

Hope that helps, I'm just learning about this stuff myself, maybe others can answer any in-depth questions you have...

Jeff

AskRaq · April 18, 2007 10:10AM

So... is Sintered & Unburnished the same thing essentially?
Some pics I've seen are showing what looks to be a non-shiny coin that looks lightly abraided, others are a darker coppery color, and others are almost black colored?

SUMORADA · April 18, 2007 11:05AM

here's mine, missing the reverse clad layer and it'a smoothie (no edge lettering) to boot!
i know i'm a pig putting this up every chance i get but i figure the odds of me topping this find in my lifetime are nill..........so what the hell i'm a pig...

coinsarefun · April 18, 2007 11:18AM

I also have one. It has almost a brown leathery look. Still somewhat shiny. I thought maybe it when through some different anti tarnish rinse. I am not sure either.

I was under the impression that sintered looks almost black.
Every time I try to scan it looks lifeless. When I take picture it is to far away. I do not have my lens for the camera yet.

I did give it to PCGS and I should hear something in the next week or two.

AskRaq · April 18, 2007 11:24AM

Sumorada - about the missing clad layer coin (quite a Beaut too!), is the surface shiny & lustrous like the normal clad layer? As in, are the surfaces all smooth, or are they scratchy looking up close?

SUMORADA · April 18, 2007 11:42AM

the strike on the reverse where the clad is missing is bright and crisp although some of the details are missing because the planchet is much thinner,the obverse is also missing some lettering for the same reason, here are some pics before it was slabbed

AskRaq · April 18, 2007 1:44PM

Sumorada - very cool pics! It looks like it is also Struck Thru with the "sunburst"... (which PCGS was originally designating) - so SUPER SWEET! Any idea why they stopped designating the Struck Thru??

Also, one of the two coins that I have that are "odd" has got to be the Unburnished type because it is not really shiny and looks a bit scratchy & a dull coppery, but not black; it also seems to be very slightly thicker at the edge than the other coins because it's flat all the way up to the rim (no real slant/curve between the rim & edge).

I found this, in an article by Susan Headley, to be helpful: (from Page 2) -
Minor Washington Dollar Errors
Unburnished Planchet - Confirmed reports of several dozen specimens. There may be two types of this error, one a black, sort of burnt-looking type planchet, and the other a dull, dark brass-like color. I have confirmed the non-burnt type; several dozen reported to me, many more on eBay, total number unknown.

Washington Dollar Errors - Comprehensive Listing of Confirmed Error Coins (Pg.2)

But the article doesn't mention "Sintered", so I am assuming that the term Unburnished & Sintered are used to describe the same thing - but in different 'tones'??

One Last Time - CLARIFICATION Please... Anyone??

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