Why I don't understand grading

Log in or Sign up to hide this ad.

how in the world did that get a MS64 grade? i bet it's been popped out and replaced with a lower grade

 

1) It's copper, so a completely different animal.

2) It's clearly corroded, and has been silently overlooked as the TPGs do with many old USA coppers.

3) That coin has little if anything to do with the coin in this thread. Yes, it proves your point that corroded coins can and do end up in problem-free TPG slabs, but it doesn't prove diddly about this 20th century Brazilian silver coin. Take off your tunnel vision "TPG-hate" goggles and assess the coin Doug.

 

I agree with you, but you're simply wrong in the case of the coin in the OP. But you won't admit it no matter how many other UNC examples people post in this thread showing the same porosity only on the bust of the coin.

Believe what you want about this coin (I know you already do anyway).

Cheers.

 

I feel like arguing with some people is a waste of time.

You will never convince Doug, so don't try. We can only hope to present an opposing viewpoint to others reading this thread. I think that has been effectively done.

 

We all drink the koolaid at one point or another I suppose, but we don't always mix it with booze
... Sorry, couldn't resist the comedic aspect of replying to that.
I'm being 100% facetious there.

But in all seriousness - the OP coin is not corrosion. I personally think it's leftover grease on the lower relief parts of the dies, but it's pretty clear this is not a case of the coin being corroded.

 

All the turd-flinging and jokes aside, I just wanted to ask one question. In your time as a numismatist... how many examples of this particular coin have you handled in person?

 

Fair enough. Let's just leave it at that.

 

Please explain scientifically how only the devices of the obverse of the coin would suffer from pitting corrosion while the remainder of the coin is unaffected? And in case you are thinking about bluffing, remember, I have a degree in metallurgy with a specialization in corrosion.

 

In your 40 thousand posts, I can only recall you admitting that you were wrong one time. And you literally had hundreds of opportunities over the years.

And then you have the nerve to accuse the rest of us of being obstinate. You are like a little kid employing the "I know you are, but what am I" defense. Truly unbelievable.

 

I have made mistakes, just like everyone else and I freely admit my mistakes, eg:

https://www.cointalk.com/threads/1916-s-walking-liberty.243720/#post-1878270

Sometimes, I even create a thread about my own mistakes:

Mechanical Errors--Another risk of buying sight unseen

Now be so kind as to explain scientifically how only the devices of the obverse of the coin would suffer from pitting corrosion while the remainder of the coin is unaffected?

 

BTW, If you are looking for a thread where you were clearly proven wrong but refused to admit it, here you go!

https://www.cointalk.com/threads/ho...e-graded-this-coin-problem-free.254865/page-5

I have many more, eg shovel scoops, counting machine damage on Danish gold etc.

 

Now be so kind as to explain scientifically how only the devices of the obverse of the coin would suffer from pitting corrosion while the remainder of the coin is unaffected?

 

I am still with Doug regarding the corrosion issue:

The Sisters of Mercy - This Corrosion