Franklin's - in Mint Sets, with White Corrosion

Discussion in 'US Coins Forum' started by USS656, Dec 8, 2019.

  1. tommyc03

    tommyc03 Senior Member

    I'm very much not trying to be difficult or challenge a milk spot scenario, but if it was the result of an improper rinse of the planchet then why the big glob on the left side of the packaging in the original 2nd photo?
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  3. USS656

    USS656 Here to Learn Supporter

    Hi Tommy, can you repost which photo you are talking about specifically?
  4. tommyc03

    tommyc03 Senior Member

    1 franlin half glob.jpg
  5. -jeffB

    -jeffB Greshams LEO Supporter

    Near the top left of the pouch? I thought that was just another reflection like the one on the right...
  6. tommyc03

    tommyc03 Senior Member

    The right does look like a reflection. The left looks like it has texture and depth. I really don't know for sure.
  7. USS656

    USS656 Here to Learn Supporter

  8. USS656

    USS656 Here to Learn Supporter

    tommyc03 likes this.
  9. USS656

    USS656 Here to Learn Supporter

    can post better images tonight
  10. tommyc03

    tommyc03 Senior Member

    Thanks for the photo addition. That clears that part up for me.
  11. Conder101

    Conder101 Numismatist

    Since no one has said anything about it, that isn't a mint set, it's a proof set.
    Skyman, USS656 and alurid like this.
  12. Ana Silverbell

    Ana Silverbell Well-Known Member

    One source (Rick Tomaska- not sure which book) says that milk spots are soap residue left on the planchet because the planchets were not properly rinsed to remove all the soap. The soap residue is then permanently struck into the coin during the minting process creating the white spots. They cannot be removed, they are part of the coin. I have seen a coin with a milk spot that covered nearly the entire obverse.
    Last edited: Dec 9, 2019
    thomas mozzillo likes this.
  13. USS656

    USS656 Here to Learn Supporter

    From you - I was hoping for more insight into the spots. As usual, you are correct. :)
  14. USS656

    USS656 Here to Learn Supporter

  15. tommyc03

    tommyc03 Senior Member

    At this point I'm on board with milk spots, in the extreme.
  16. Kentucky

    Kentucky Supporter! Supporter

    Cheech9712 likes this.
  17. GDJMSP

    GDJMSP Numismatist Moderator

    Darryl I've looked at tens of thousands of original Mint and Proof sets over the years - I collected them for almost 40 years - and never once have I ever seen anything like what I'm seeing on these coins.

    Milk spots on some of the Proofs ? Yeah, I've seen that more than a few times. But what I'm seeing on these doesn't look anything like milk spots. But since I'm seeing what appears to be some kind of machine damage on the coins from counting or packaging, particularly the '62 - that's about all I can think of that it can be from - it makes me wonder if some kind of contaminant got on the coins during the process.

    I suspect that about the only way you're ever gonna find out what it actually is on the coins is to take samples and have them analyzed. Or send the coins to a lab and simply let them analyze it.
    USS656 likes this.
  18. Michael K

    Michael K Well-Known Member

    It practically looks like mold.
    And I also thought the big spot looks like spilled paint.
    I bet if V.Kurt were still here he might have some mad scientist
    formula to get rid of those Super Milk spots.
    Post acetone photos to see if there's a change.
    But I am thinking this is going to require a stronger dip.
    Last edited: Dec 10, 2019
    Cheech9712 likes this.
  19. USS656

    USS656 Here to Learn Supporter

    I agree Doug, the green Crystal's easily flake off the coin and makes me wonder what crystallizes like this that would be introduced during the minting/handling process. Thank you for your thoughts.
  20. messydesk

    messydesk Well-Known Member

    Useless answer: An alien gobbed on it.

    Snarky, and equally useless, answer, with apologies to Bill Fivaz: I don't know, I wasn't there when it happened.

    Less useless answer in light of the previous one: It could be anything, as the mint operation is not a clean room, and 56 years is a long time to give contaminants on the surface of a coin, or transferred from the plastic, a chance to do their work.

    Related insightful advice: Never buy proof sets sight unseen.
  21. USS656

    USS656 Here to Learn Supporter

    picked these up for less than melt so no harm done. Didn't want to pass them off to someone else and an coin experiment is always fun and informative.
    Michael K and -jeffB like this.
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