Sintered planchet

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twiasp
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Sintered planchet

#1 Unread post by twiasp »

How do you tell a sintered planchet vs one that is just discolored from environmental damages? I ask because I don't think I have ever seen one in person. Is it discolored on one side or both sides?


Ty guys if you can help.

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Re: Sintered planchet

#2 Unread post by JTCC »

Pictures please?
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Re: Sintered planchet

#3 Unread post by twiasp »

Was hoping some of you guys could help me understand sintered planchets. I have looked around at youtube video's and other sites, they must be more rare than I thought.

I assume it is a copper look on clad coins, but a dull look on nickels (or are nickels considered improper annealing, not sintered?)

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Re: Sintered planchet

#4 Unread post by SensibleSal66 »

This is the best I could find...
https://www.error-ref.com/improper-annealing/
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Re: Sintered planchet

#5 Unread post by Earle42 »

I have had a bit of experience with sintered planchets or "Black Beauties" as the nickels tend to be called.

The link below from a specialist in collecting these, made by Spruett on coincommunity.com, explains all about black beauties. Many are shown in this thread as well as people posting some asking if theirs are sintered or just stained. Go there to see how to recognize them.

https://www.coincommunity.com/forum/top ... _ID=288744

On the 8th page of that thread I posted pics of my "Black Beauty" quarter.
Common grading company shortcomings & resulting co$tly mi$take$ to collectors (using Kennedy No FG halves):
https://tinyurl.com/y7rksxu8

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Re: Sintered planchet

#6 Unread post by Paul »

This is been a touchy issue for quite some time. I purchased one of these raw several years ago, and had it certified through ANACS.
I believe the only way to properly identify these, is to have them personally inspected by a professional.
Please read the following:
Attachments
SINTERED PLANCHET DEF - Copy.JPG
1959 JN SINTERED21 - Copy.jpg
C.O.N.E.C.A. Wi State Rep
Fly-In Club Wi State Rep

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