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      Try the new NGC Journals!   03/22/2017

      NGC has launched a new and improved NGC Journals! Available on NGCcoin.com, the new NGC Journals improves upon the popular platform to write blogs and discuss them with other members. The new NGC Journals has an improved design that makes it significantly easier to post and read journals from any device, including smartphones and tablets. Adding images has been made much simpler, and the NGC Journals now give users the ability to create polls and "like" other entries. A popular feature of the old NGC Journals was the ability to open an entry to comments from other users. This feature has been retained and enhanced — users can now comment on the same page as the original Journal entry, creating a seamless experience. Best of all, the same login can be used to post Journals, make comments and access the other features of the NGC website. Old NGC Journals entries will be migrated to the new NGC Journals soon. In the meantime, users can make posts to the new NGC Journals. To get started, create a Journal and make an entry. Unlike the old NGC Journals, you create a single Journal and then add new entries to it. Your Journal can be customized with a cover photo, and you can choose to make it available to all users or only to the users that you select. You can also choose to receive notifications whenever people comment on one of your entries. Scroll below for helpful tips on using the new NGC Journals or go to the new NGC Journals now >   Instructions / Tips To get started, you must first create your Journal and then you can add entries to that Journal. Choose Journals from the Browse menu if you are not already on the Journals page

        Click Create a Journal

        Name your journal, add a description, add a photo, and choose if you want all users to see your journal or if you would like it available to a specific audience only. Click Continue to move on to the next step where you can add you first entry!

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        Commenting on another user's Journal is easy. After selecting a journal to read, scroll to the bottom of the page where you will find the field where you may enter your comments and see the comments others have posted.

Conserving modern bronze coin
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5 posts in this topic

I've purchased this error coin that sadly has some verdigris.  The composition, according to numismatic references, is 97% copper, 2.5% zinc, and 0.5% tin.

I wonder if professional conservation by NCS would improve the coin or harm it. I tried posting this question on the "Ask NCS" forum here, but it's been 7 days and my question was not approved yet, so I don't know if that forum is still active or not. I know that there are no absolute guarantees when it comes to conservation and that there are always risks, but I'm looking for opinions from people who tried similar things in the past.  

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good day, i have forwarded numerous coins to ncs with some good results, in some cases the grade stayed the same but the coin looked much better. I am no expert on the above coin but NCS will definately get the grit off, the only problem i see is that at the bottom picture on the right hand side of the coin seems to be some damage (the green spot). you might get a details grade. 

The response time you get from NCS is quite shocking, i have posted questions before and it takes weeks to get answered.

 

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The response time you get from NCS is quite shocking, i have posted questions before and it takes weeks to get answered.

 

And even longer to get stuff back from NCS...okay just kidding.  Actually I've posted a question there, and in the interim while waiting for a response, the items have been sent, conserved, graded and sitting around my house now for months.  

Even though it's a lengthy process at least they are not rushing things.  I've sent various items (medals/coins) with similar age/problems/metals--can't say they were exactly the same, but similar.  I have been invariably happy.  I'm not worrying about grades but surface stabilization for the most part.  NCS will not do something if they don't think it will help.  That said, there is always a risk.  

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I know what I'd do. I'd blow the corrosion off with a mix of borax and washing soda solution, then seal it with a particular kind of wax. I did that on an ancient bronze of Magnentius and it took a while due to the large amount of bronze disease, but the coin was worth saving and I'm glad I did.

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What do you mean by "blow the corrosion off"?  Are you soaking it in this solution?  Doe it reduce the corrosion or dissolve it?  What does it do tot he color or patina of the coin?

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