Question about wheel marks and grading
Morgan13
Posts: 2,897 ✭✭✭✭✭
I know some of coin submissions come back as detail graded coins due to "wheel marks".
What are they and how do they occur?
Is it PMD or is it possible they occur during the minting and accumulation of the coins.
I have often thought that rather than calling a coin "detail roller marks" that they could be taken into consideration of a coins grade.
Most of the time we are hard pressed to even find them.
I wouldn't hesitate to buy a nice looking coin "details roller mark or marks" especially if it was not obvious.
Do you have an example you could show of a wheel mark?
Student of numismatics and collector of Morgan dollars
Successful BST transactions with: Namvet Justindan Mattniss RWW olah_in_MA
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Comments
Wheel marks are an area of hairlines that are caused by the rubber wheels in coin counting machines and are PMD.
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Your hobby is supposed to be your therapy, not the reason you need it.
Wheel marks come from the counting machines used after the coins leave the mint, always PMD. Read and learn.
https://ngccoin.com/news/article/4412/Wheel-Marks/
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.
Thank you!
Definetly learned something today!
Student of numismatics and collector of Morgan dollars
Successful BST transactions with: Namvet Justindan Mattniss RWW olah_in_MA
Dantheman984 Toyz4geo SurfinxHI greencopper RWW bigjpst bretsan MWallace logger7 JWP BruceS bigjpst
JWP PROMETHIUS88
Thank you very much for sharing this
This is why I post these kinds of questions. Not only do I learn but we can all learn.
I have seen many coins at local shows with wheel mark details holders that you really have to search for the flaw.
Does anybody have an example they can post?
Student of numismatics and collector of Morgan dollars
Successful BST transactions with: Namvet Justindan Mattniss RWW olah_in_MA
Dantheman984 Toyz4geo SurfinxHI greencopper RWW bigjpst bretsan MWallace logger7 JWP BruceS bigjpst
JWP PROMETHIUS88
@Morgan13 & @EK1 glad you found the article helpful. @morgan13 pictures are seldom useful for this, to find wheel marks you have to tilt and rotate the coin into a single light source. wheel marks are very easy to miss until you have seen them a few times.
My Collection of Old Holders
Never a slave to one plastic brand will I ever be.