Black Dots On The 10 Ruble Coin - Coin Community Forum

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Author	Replies: 7 / Views: 826
Slerk Pillar of the Community Russian Federation 1557 Posts	Posted 01/06/2022 12:12 am Sorting through my coins, I noticed black dots that are present on 10 rubles. They were lying in capsules (as in the photo), but this did not save them. What do you know about it ? Report this Post to the Staff

coaster Pillar of the Community Australia 1365 Posts	Posted 01/06/2022 12:51 am Looks like they may be carbon spots to me. Report this Post to the Staff
january1may Pillar of the Community Russian Federation 5178 Posts	Posted 01/06/2022 06:19 am The large blobby dot on the O looks like a drop of moisture somehow got inside the capsule, and started oxidizing the coin because the capsule didn't allow it to evaporate. Ditto the large blobby dot at lower right on obverse (ca. 4h). No idea what the smaller dots could be; they look different. Report this Post to the Staff
Coinfrog Bedrock of the Community United States 94367 Posts	Posted 01/06/2022 08:55 am Agree this is so-called "carbon flecking". Not much you can do about it. Report this Post to the Staff
kanga Pillar of the Community United States 5825 Posts	Posted 01/06/2022 08:58 am I refer to coins like this as "sneeze coins". Before it got encapsulated someone was not careful while handling it. It may not have been a sneeze but it was exposed to something similar. Report this Post to the Staff
BadThad Bedrock of the Community United States 19972 Posts	Posted 01/10/2022 11:34 am Appears to be cupric oxide corrosion from improper storage. It's only affecting the copper part. Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
Grinya Valued Member 251 Posts	Posted 01/12/2022 10:27 am Did you degrease your coins by alcohol or acetone before putting into capsules? This may be a reason for such corrosion. For this particular coin the best way for you is to buy a new one in UNC conditions.... Report this Post to the Staff
Slerk Pillar of the Community Russian Federation 1557 Posts	Posted 01/16/2022 9:32 pm Quote: For this particular coin the best way for you is to buy a new one in UNC conditions... I understand you, but such dots may appear on new coins. I wonder where I made a mistake? What should I do to prevent such dots from appearing on new coins Report this Post to the Staff
	Replies: 7 / Views: 826

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