2007-P Washington MS65 position A Sintered Planchet

coinsarefun · May 13, 2007 5:38AM

I just got this back from PCGS along with 3 more the same.
Does the Sintered carry a premium? It is marked as a Mint Error.
Should I sell or hang on?

Rampage · May 13, 2007 7:35AM

It depends on how dramatic the error is. Do you have a picture of it? If you have three, I would sell one on eBay at one cent with no reserve. That will tell you the value of your coin. Good luck.

coinsarefun · May 13, 2007 7:41AM

The pictures do not come out clear,. Its brown in color.
I may try to sell some

ChicagoRon · May 13, 2007 11:03AM

I've sold 3 sintered planchet GW's raw for 33.00 to 86.00 depends on the bidders, mine were all denver. Would grade 65 to 66.

Chicago Ron

tyler267 · May 14, 2007 2:05AM

What is a Sintered Planchet and how do you tell if you have one?

coinsarefun · May 14, 2007 2:21AM

This one for sale on ebay is what mine looks like.
Sintered

messydesk · May 14, 2007 2:55AM

I sold a raw one for around $70, I think.

drkilmer · May 19, 2007 12:54PM

This Washington Quarter is on a sintered planchet. It's a deep copper color. I believe "sintered" refers to a copper deposit on the planchet due to some type of contamination from cent production. Maybe somebody else has a precise definition.

Goldbully · May 19, 2007 12:57PM

<< <i>This Washington Quarter is on a sintered planchet. It's a deep copper color. I believe "sintered" refers to a copper deposit on the planchet due to some type of contamination from cent production. Maybe somebody else has a precise definition.

>>

Great post and

coinsarefun · May 19, 2007 1:34PM

That's a realy nice looking coin, better that the new GW's

Link to definitions of sintered

foundinrolls · May 21, 2007 4:37AM

The Washington Dollar you pictured is struck on an unburnished planchet and is considered an error. It is not a sintered planchet error. They should not be sold as sintered planchet errors.

Sintered or copper washed planchets are coin blanks left in the annealing furnace for an extended period of time, causing dust from previous coins to embed in the blank planchet making it darker then usual. The quarter shown above is a sintered planchet error.

coinsarefun · May 21, 2007 5:15AM

Which coin were you referring to?

foundinrolls · May 21, 2007 5:20AM

The quarter in the small picture at the beginning of the thread by Chicago Ron, although difficult to see looks (in conjunction with the description) to be struck on a sintered planchet.
The Bicentennial piece is struck on what would be considered a sintered planchet.

Without a picture of your coin, it is tough to be sure. Brown in color often means that the coin was dug up by a metal detectorist and is discolored by having been in the soil reacting to whatever the soil was made of.

coinsarefun · May 21, 2007 5:33AM

What about this one?
Is it sintered or unburnished?

foundinrolls · May 21, 2007 7:35AM

A clearer picture would be a help. It is tough to tell if it is on an unburnished planchet or is just toned.

in either case, not a sintered planchet

coinsarefun · May 21, 2007 7:50AM

I tried again but still somewhat blurry. I had a total of 4 coins and they were sent back as sintered planchet

notwilight · May 21, 2007 7:55AM

<< <i>A clearer picture would be a help. It is tough to tell if it is on an unburnished planchet or is just toned. in either case, not a sintered planchet >>

Paging Doctor Weinberg. I think Fred has disagreed with you on this one. --Jerry

reds · May 21, 2007 8:03AM

Here is a vote for sintered planchet

Manorcourtman · May 21, 2007 8:10AM

No doubt sintered. I have a couple in for grading myself.

LUNETIST · May 21, 2007 8:41AM

Hello,
Quick question, What are these going for? The reason I ask is everyone has them as an individual. Mine is in an original mint role not the bank wrapped rolls and it is on the end of the roll. What could something like this go for?

Thanks,

foundinrolls · May 21, 2007 9:46AM

The first thing that has to be determined is what the error is. The picture is not clear enough (as mentioned) and the color makes it difficult to be sure.

What is on the slab doesn't enter into it for me because I suspect that there easily could be confusion about the cause of the discoloration.

My understanding of the process involved with the Minting of the dollar coins is that the planchets (blanks ) are burnished with steel shot and then coated with a chemical that is supposed to retard tarnish. Planchets (Blanks) that miss this process are darker than the burnished planchets (blanks) . (Also, to be clear, I am not sure if this process is separate or apart from the annealing process)

Noone has yet explained here how one of these planchets could become struck on a sintered planchet as opposed to being struck on an unburnished planchet. I'm all ears :-)

If the darkness of color can be attributed to the annealing drums and the process therein, then it might be considered a sintered planchet. Again, I think color would be critical. Being darker in color in my humble opinion is more likely than not the result of an unburnished planchet being fed into the press. Also, I would think that by the nature of the processes involved, the frequency of unburnished planchets would likely be higher than the frequency of sintered planchet errors occuring on these coins.

I would have to think that the surface of the coin might appear a little different if a coin was struck on an unburnished planchet vs. a sintered planchet but the pressure used to ultimately strike the coin might eliminate any good evidence that the planchet was unburnished.

Personally, and I could be wrong, I think there is too much confusion created by Ebayers selling the dark colored coins as "sintered planchets"

OK, Rip me up:-) I'm ready:-) Fred, let me know how far off the mark I am...I can take it:-)

Thanks,
Bill

2007-P Washington MS65 position A Sintered Planchet

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