Just Grease or something else?

Going through a couple rolls of dimes, I came up with the following 1989 dime. Although I only took photos of a one section of both the obverse and reverse, the intire coin is like this. I suspect it is just alot of grease, but would like to hear what the experts think.

Thanks
Dave

 

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Just serious pitting from a corroded die and that;s real bad no error
Jazzcoins Joe

 

I disagree! If the Dies were that corroded, then they would have been retired and replaced. I believe that the coin was subjected to some type of corrosive (acid), either accidentally or intentionally.


Frank

 

If it was subjected to acid wouldn't it have eaten through the outer layers of alloy material to the inner core of copper?

 

Dug up metal detecting, cleaned using electrolysis?

 

But they are talking about patches, not covering the entire die, and on BOTH dies? Plus I think you will find they are discussing rust on dies from the early 19th century, not moderns. No this is not rust this is a corroded coin from either a strong acid or base.

If you leave it in the acid long enough sure, but have you ever tried to use acd to eat through the coppernickel layer of a clad coin? I have and even with a concentrated acid and replenishing the acid when the reaction slows it still takes awhile.

 

Conder101, with your experiment in the acid, does it look like the photo in the first post?

 

I didn't submerge the whole coin, just filled the whole area within the rim with acid, but yes the surfaces that the acid had etched did look a lot like that. The actual surface appearance will vary some depending on the type and concentration of the acid.

 

Here's a coin that has been put in acid seem to have a different appearence then the dime and the rims are taken out

jazz Jooe

 

Jazz,

The Dime and Nickel have two completely different compositions, therefore they will have completely different reactions in an acid or other corrosive! Also, it depends on what type of corrosive is used and how long the coin or coins are subjected to it.


Frank

 

Thanks

I just want to say thanks to all who replied. I have definatly learned more in my short time here, then in all the reading I have done.

Dave

 

the coin was acid dipped. That's all, so for those who responded that way. They are right.

Those that suggested rusted dies are completely out in left field, I'm sorry to say.

Thanks,
Bill