1988d MM / Verdi Gris question

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  • georoxx
    • Apr 2026

    #1

    1988d MM / Verdi Gris question

    Hello All.

    The pictures speaks for themselves. Comments, advise..?

    Have a great night.

    -Geo
    Attached Files
  • copperlover

    #2
    I use warm soapy water but it does not remove it totally. I then dry the coin removing all moisture with a hair dryer and once dry I apply verdi-care. Use a cotton swab with some verdicare on it and roll it over the coins surface as gently as you can. You might want to try it out on a really useless coin before you try it on
    this coin.
    Lucien

    Comment

    • jfines69
      Member
      • Jun 2010
      • 28848

      #3
      I agree with Lucien... Practice first and roll do not rub it!!!
      Jim
      Jim
      (A.K.A. Elmer Fudd) Be verwy verwy quiet... I'm hunting coins!!! Good Hunting!!!

      Comment

      • jcuve
        Moderator, Die & Variety Expert
        • Apr 2008
        • 15458

        #4
        This coin has what appears to be a lot of zinc corrosion and a popped plating bubble. I doubt there is much hope of cleaning this one up. Thad may say otherwise, but I would just leave this one alone...



        Jason Cuvelier


        MadDieClashes.com - ErrorVariety.com
        TrailDies.com - Error-ref.com - Port.Cuvelier.org
        CONECA

        (images © Jason Cuvelier 2008-18)___________________

        Comment

        • georoxx

          #5
          Either way, is it a "keeper"..? Does it look like it has promise for being RPM or ???

          Thanks for the words, guys.

          -Geo

          Comment

          • jcuve
            Moderator, Die & Variety Expert
            • Apr 2008
            • 15458

            #6
            IMO the anomaly below the MM is a popped plating bubble and not a second D.



            Jason Cuvelier


            MadDieClashes.com - ErrorVariety.com
            TrailDies.com - Error-ref.com - Port.Cuvelier.org
            CONECA

            (images © Jason Cuvelier 2008-18)___________________

            Comment

            • copperlover

              #7
              I would agree with Jason's asessment.

              Lucien

              Comment

              • georoxx

                #8
                1988d MM w/v Verdigris (post bath)

                For your "before and after" review.

                Thanks, as always.

                -Geo
                Attached Files

                Comment

                • DoubleYou
                  Member
                  • Sep 2010
                  • 3629

                  #9
                  Totally agree with jcuve. Boy! I'm gonna hafta get me-self some of that Verdi-Care!
                  Wendell Carper
                  It's a bird! It's a plane! Aw nuts... It's merely two die scratches!

                  Comment

                  • copperlover

                    #10
                    I am glad your coin came out great. Make sure you keep it in a moisture proof container as the surface has been exposed near the anamoly.So be real careful when you do any kind of washing as corosion can occur. More power to verdi-care. Thanks for sharing.

                    Lucien

                    Comment

                    • georoxx

                      #11
                      I never actually said I used Verdi-care. Since I wasn't overly concerned about the coin (after Jason's Opinion was offered), I did something a little different... And, perhaps, detrimental to a collectable.

                      I read up on verdigris to learn that it melts at 115 °C and decomposes at 240 °C.

                      I boiled it... (LOL) for about 10 minutes and then tossed it into a solution of water and Dawn dishsoap. (50/50)... all while soaking a couple of toothepicks in the dishsoap to soften up their tips. About 30 minultes in the suds and I picked gently at and around the MM (as if it were a coin that was actually worth something to me) and I was amazed how easy the stuff just fell away.

                      Now I'm no chemist... but if nothing else, the coin looks a little better than it did before the bath.

                      Comment

                      • DoubleYou
                        Member
                        • Sep 2010
                        • 3629

                        #12
                        My parents got me some dirty old Roman coins that never get clean. I tried the boil trick, but it didn't work. I've been soaking them in water for about six years now, and, yep, the dirt is as hard as ever!
                        Wendell Carper
                        It's a bird! It's a plane! Aw nuts... It's merely two die scratches!

                        Comment

                        • jfines69
                          Member
                          • Jun 2010
                          • 28848

                          #13
                          Soaking in olive oil works really well also... I have tested several really bad coins and they cleaned up extremely well... Soaked for 3 days then washed with warm soapy water!!!
                          Jim
                          (A.K.A. Elmer Fudd) Be verwy verwy quiet... I'm hunting coins!!! Good Hunting!!!

                          Comment

                          • atarian
                            Member
                            • Jun 2010
                            • 1572

                            #14
                            looking at Geos pictures its more evident that it is a bubble than another D
                            <3 In memory of Tiggar 5/21/1994 - 5/28/2010 <3 WAM Count : 025 .
                            Founder of the NDCCA. **
                            NDCCA Catalog Database Total
                            . : 2,735. ** -- Jay --

                            Comment

                            • georoxx

                              #15
                              I agree. It looks like 3 seperate bubbles. One at the upper NW corner of the inside of the D, one almost directly east of the D, and the largest of the three... S and SE of the D.

                              I guess I'll toss it into the "reject" bin so that the next guy can at least "look twice" at her.



                              -Geo

                              Comment

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