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Fun Numismatic Quiz two. Answered 11/8

Insider2Insider2 Posts: 14,452 ✭✭✭✭✭
edited November 8, 2018 9:35AM in U.S. Coin Forum

Sorry, no prizes :( as it takes me over a week to mail them to the winner.

I'm posting the rules NOW so you all can absorb them before the contest starts.

The Non-Contest:

I am going to be posting micrographs of anything that can be found on coins. Some will be easy and some will not. The correct answer is whatever I say it is :p but feel free to disagree (giving your reason) so all of us can discuss it. Images will be posted in this thread at my discretion - several each week. I will post the answers late the next day after it was posted.

In order to make this FUN for beginners I'll ask the "experts" to PLEASE not guess what any of the images are until the next day. Otherwise, folks like (fill in the blank) will get all of them immediately - NO FUN. If no correct answer is given by the next day, the "experts" should PLEASE respond. The answer for each image will usually be posted in the afternoon when I add another image.

The Rules:

  1. Anyone can guess.
  2. The BEST correct answer is in two parts. A. What characteristic the image shows. B. What are the reasons, what did you see to determine your answer.

The Example:

The Answer:

The reverse of a cent. I know because it says "One Cent." :)

New Image:

What caused the blocky discolored surface of this Indian Cent?

Comments

  • HemisphericalHemispherical Posts: 9,370 ✭✭✭✭✭

    Optically, when I zoom into the field this somewhat reminds me of a piece of opaque orange quartz with embedded mica flakes.

    Therefore, since these coins are bronze, I am guessing there is a contamination in the mix.

    Me thinks that I am way over thinking this. :|

  • sellitstoresellitstore Posts: 3,053 ✭✭✭✭✭

    Looks like "sawdust" toning so I'll say it was stored in contact with sawdust or material of similar shape that reacted where in contact with the surface, leaving adjacent areas untoned.

    Collector and dealer in obsolete currency. Always buying all obsolete bank notes and scrip.
  • SmudgeSmudge Posts: 9,808 ✭✭✭✭✭

    @thefinn said:
    Crystalization in the alloy. Not fully mixed and/or annealed properly.

    +1

  • chumleychumley Posts: 2,305 ✭✭✭✭

    coin was left on the parquet floor of the boston garden?

  • Insider2Insider2 Posts: 14,452 ✭✭✭✭✭

    @chumley said:
    coin was left on the parquet floor of the boston garden?

    ???

  • PerryHallPerryHall Posts: 46,797 ✭✭✭✭✭

    @thefinn said:
    Crystalization in the alloy. Not fully mixed and/or annealed properly.

    Yup. That was my first thought.

    Worry is the interest you pay on a debt you may not owe.
    "Paper money eventually returns to its intrinsic value---zero."----Voltaire
    "Everything you say should be true, but not everything true should be said."----Voltaire

  • AUandAGAUandAG Posts: 24,929 ✭✭✭✭✭

    Looks like it came out of my dog....

    Have no clue and hope I don't see one.

    bob :)

    Registry: CC lowballs (boblindstrom), bobinvegas1989@yahoo.com
  • Insider2Insider2 Posts: 14,452 ✭✭✭✭✭

    Answer:

    Crystallization in the alloy. Not fully mixed and/or annealed properly.

    This occurs mostly on Indian cents and IMO it is a very attractive "look" rather than the long streaks of discoloration we call "woodies."

    Post some "woodies" for us if you wish.

  • ashelandasheland Posts: 23,706 ✭✭✭✭✭

    My thought was the alloy mix. Interesting!

  • HemisphericalHemispherical Posts: 9,370 ✭✭✭✭✭

    Quartz are crystals.

    Interesting to see similar effects within metals.

  • Insider2Insider2 Posts: 14,452 ✭✭✭✭✭

    @Hemispherical said:
    Quartz are crystals.

    Interesting to see similar effects within metals.

    Lots of minerals and metals crystalize.

  • HemisphericalHemispherical Posts: 9,370 ✭✭✭✭✭

    @Insider2 said:

    @Hemispherical said:
    Quartz are crystals.

    Interesting to see similar effects within metals.

    Lots of minerals and metals crystalize.

    I agree. I just never had seen it on a coin until now and how much the pattern is similar to some types of quartz crystals.

    Also adding that liquids crystalize, too. Especially, when putting ones favorite beverage on-the-rocks. B)

  • Insider2Insider2 Posts: 14,452 ✭✭✭✭✭
    edited November 8, 2018 2:04PM

    Double Post.

  • KkathylKkathyl Posts: 3,762 ✭✭✭✭✭

    I think I am looking at the surface of a 1907 Indian head penny. It looks like less wear than what I typically see.

    Best place to buy !
    Bronze Associate member

  • BoosibriBoosibri Posts: 12,391 ✭✭✭✭✭

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