Copper (I) oxide formation, probably from soil find. https://en.wikipedia.org/wiki/Copper(I)_oxide
I think we are talking bullion at this point.
I was looking for my toned 72/72 and found these in the safe. I like the varieties in high grades, you can actually see the markers. [ATTACH]...
I do not think it is a RPM, as one has to add that since the date clearly shows MD, and the mm is in the same area, it would be affected by the...
I am pretty sure I have seen at least 2 that are misleading here on CT. One was like yours, but it was a while ago. Jim.
The bag zippers are the worse.
Or working in a cadaver room for an hour. Semester is OVER! Yea!!
He has a rating of (0). Newbie probably doesn't even know which war.
Assuming that is what it is and not mixed with any binding chemicals, most likely. The strength of the ammonia factor will be important, and yes,...
For your record , here is the MSDS with list of ingredients. Jim...
You can list it here and go through the PMs to see if someone you feel is safe is replying as this is not ebay , you can choose a buyer you have...
Yours looks rather like a die crack that runs in a curve from the wrong place in the bottom up to the top of the 3 which isn't the overdate....
What % or concentration of ammonia solution are you using?
All of the ones in the last drawing ( magnified) appear to show chamfered ( rounded edge/rim joining) edges indicating business strikes rather...
The "splotch" is corrosion, any position is coincidental. The outer 100% copper layer is one of the most common reactive metals, and that is what...
This is the part that scares me : Shipping: FREE Standard Shipping from China/Hong Kong/Taiwan to worldwide | See details See details about...
I would worry about the damage on the reverse, especially the shield, causing a detail grade. Jim
I agree with the circulation comment, AU58 @ best, IMO Jim
Weird in coins is 99%+ damage or peridolia. Jim
https://www.magictricks.com/double-sided-quarter.html
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