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    #16
    The sleeves containing PVC, over time, are damaging to coins and medals. As a means of temporary storage they are ok.

    For the most recent plastic bags shown, I recommend reading the chemical make up of the bags if listed. If not then assume that if the bags are of a soft plastic like material then they use PVC.

    Gary B
    ANA LM #1201868, OMSA LM #60, OVMS LM #8348

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      #17
      Originally posted by Gary B View Post
      The sleeves containing PVC, over time, are damaging to coins and medals. As a means of temporary storage they are ok.

      For the most recent plastic bags shown, I recommend reading the chemical make up of the bags if listed. If not then assume that if the bags are of a soft plastic like material then they use PVC.

      Gary B
      They are made of a hard plastic, brought from thirdreichmedals.com.

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        #18
        Thanks guys. I really appreciate the info.

        Sean

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          #19
          Well, I decided to go the least expensive way. I'm using the snack bags you get from Ziplock. They are 3in wide and 6in long. I'd like to see a more robust protection, but this should work.

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            #20
            Originally posted by Lewis Bunker View Post


            New to this so i hope the photo comes up. But are these the plastic sleeves you are meaning?

            Lewis
            These look like the "soft bags" with PVC in them.

            Gary B
            ANA LM #1201868, OMSA LM #60, OVMS LM #8348

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              #21
              I´ve found out that in the end it is all about humidity control inside. If you seal the stuff at low humidity airtight it should work. Any frame or display case (also closed) adapts to humidity. Humidity creeps in more easily than it gets out, even if the room humidity is lowered (my findings)- therefore I have a showcase with a hygrometer to control and use Renwax. I recently observed that the little thin lines of excess renwax on some of my items also stay after several years- so the stuff seems to hold quite a while (referring to an old discussion). I use gloves, too, due to the hand fats and humidity.

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                #22
                Originally posted by o.r.k. View Post
                I´ve found out that in the end it is all about humidity control inside. If you seal the stuff at low humidity airtight it should work. Any frame or display case (also closed) adapts to humidity. Humidity creeps in more easily than it gets out, even if the room humidity is lowered (my findings)- therefore I have a showcase with a hygrometer to control and use Renwax. I recently observed that the little thin lines of excess renwax on some of my items also stay after several years- so the stuff seems to hold quite a while (referring to an old discussion). I use gloves, too, due to the hand fats and humidity.
                Could you please post photos of your setup?

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                  #23
                  I keep my Medals/Badges in acid free cardboard boxes.The boxes are stored in a Metal drawer Cabinet.Inside the Cabinet drawers I place two desiccant pouches.

                  The room is kept at 40-45% humidity with dehumidifier.

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                    #24
                    Originally posted by Gary B View Post
                    These look like the "soft bags" with PVC in them.

                    Gary B
                    The main concern you should have would be this.

                    if you put a medal inside a plastic envelope and it heats up, and cools down, heats up etc, it causes a humidity change, so even inert envelopes which is what these are, wouldn't be good for them, in the sunlight.

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                      #25
                      Originally posted by DAZZA3483 View Post
                      I keep my Medals/Badges in acid free cardboard boxes.The boxes are stored in a Metal drawer Cabinet.Inside the Cabinet drawers I place two desiccant pouches.

                      The room is kept at 40-45% humidity with dehumidifier.
                      Thanks for that. Good safe setup.

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                        #26
                        Took the advice given on most museum/conservation sites....don't think you can go much wrong with this method Lewis.

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                          #27
                          Unfortunately I can´t easily upload pics- I´d gladly send a pic to a member or you, Lewis, for uploading it here. The concept is easy- the glass showcase has a prosorb silicagel cussion fixed at 40% humidity at the upper and one at the bottom shelf. I regulate these cussions with little clay sacks to take out excess humidity- these can be baked in an oven and reused multiple times. The amount of clay sacks depend on what the hygrometer says, one sack lowers humidity by about 4%- so I keep the humidity between 40-47%. I sealed the showcase with solvent free tesa stripes (very transparent) at the corners, (as unexpectedly too much humidity came in before). My showcase is in the bedroom, which certainly is not an ideal place (variations between 35-65% humidity) - but by these measures I can keep the humidity relatively constant. Simple and rather inexpensive steps but it works.

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                            #28
                            Originally posted by o.r.k. View Post
                            Unfortunately I can´t easily upload pics- I´d gladly send a pic to a member or you, Lewis, for uploading it here. The concept is easy- the glass showcase has a prosorb silicagel cussion fixed at 40% humidity at the upper and one at the bottom shelf. I regulate these cussions with little clay sacks to take out excess humidity- these can be baked in an oven and reused multiple times. The amount of clay sacks depend on what the hygrometer says, one sack lowers humidity by about 4%- so I keep the humidity between 40-47%. I sealed the showcase with solvent free tesa stripes (very transparent) at the corners, (as unexpectedly too much humidity came in before). My showcase is in the bedroom, which certainly is not an ideal place (variations between 35-65% humidity) - but by these measures I can keep the humidity relatively constant. Simple and rather inexpensive steps but it works.
                            Did you not get my message? You can send me the photos @ lewisbunker@yahoo.com.au
                            I will do my best at uploading them

                            Lewis

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                              #29
                              This is O.R.K. setup. Sorry about the image being turned like that.

                              Here is what he said about his great setup. Thanks for sharing!

                              The big pack is the silica gel and the small sacks the clay supplement (the solvent free transparent tesa stripes can´t be seen- they also are invisible in reality)- There is a digital and a normal hygrometer, as they sometimes differ by maximum 4-5%.
                              (I take the average)
                              If your room has a controllable humidity and you can check it in your storage system, too, then you surely are on the safe side. The thin silikon tube between the sliding doors is a u- formed tube that seals off the gap between the two sliding doors.



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                                #30
                                Thanks Lewis, well as aked a very economic method to preserve- as the showcase is in our bedroom (space problem) I had to react and tried to make the best of the truly disadvantaging circumstances- I keep humidity between 40-47%, checking with one digital and another normal hygrometer taking the average and use renwax. So far I havent found a deteriorating piece (checking with older pics)- sorry for the weird angle pic.

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