Help-my copper's are "rusting"

Just read the book "Coin Chemistry" have you tried putting you're coins in kointains , then store in an Intercepter bag , of course this won't remove the corrosion but will keep new coins safe .
rzage

 

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Sulfides in the air can get to anything , have you tried Kointains plus Interceptor bags .
rzage:smile

 

No I haven't had any problems since then... This was my childhood coin collection though, and is kind of sad.

You should start a thread on the book you are reading. Sounds interesting.

I looked up the kointains. I'll have to try some.

 

Never had oil on my hands after handling new coins .
rzage

 

Yes all of them. The presses need lubrication, the dies have a coating of oil to prevent rust and the planchets themselves are oiled so they will move through the feeding tubes and equipment easily. So yes all of the coins come from the mint with a light film of machine oil on them. (Remember the proof gold buffalos back in 2006 that had red stuff on them and it was determined it was oil and traced back to excessive oiling of the planchets. Even the proofs are oiled.)

 

To Harryj and AdamL I will post those pics of the 09S and the 08S, just busy right now with work. Thanks for the replys
- dprice7

 

Reply by dp: what did you do in Florida that worked and didn't work?
Thanks for your input!

 

No it is standard procedure (at one point they even had an oil mister that sprayed oil down onto the planchet bins (Michael Frantz, die setter Denver mint 1960 - 1998), it's just that normally the film is so light and thin it isn't noticable. On the Gold buffalos they just got excessive from time to time. And it is this everpresent oil that eventually builds up collecting dust and dirt that creates the "grease" that results in grease filled dies.

Frankly I would not be surprised if the oil film doesn't actually help with the striking providing lubrication to the metal of the planchet moving past the die face resulting in better strikes and less die wear.

 

For the record I agree with GDJMSP, but it's more of a gut feel than anything more substantive. Please keep us updated as to what you find out, GDJMSP....Mike

 

Air Tite

This thread I started has got me reading everything I could find re coin preservation as the beach air is clearly bad for coins, but sorry not about to move!!!!! I having a debate now with myself re this: how should I best protect my coins in a bad climate? I have already ordered enough AirTites to replace all my Intercepts (to me Intercepts allow too much air in). Ordered (online) albums and boxes both to hold the AirTites as they are too small to strore and don't want them to get lost (the round shape makes them bad for storage-they fly around). However, it really bugs me that my nonslabbed coins and slabbed coins are physically seperated. Call me weird, but I like orderly storage of my coins in sequence. Thought about buying the Coin World slabs by Amos, that are shaped like PCGS and you can put your own label in . Concerned that they are not airtite enough and I might as well stick with my Intercepts if I was going that route. Appreciate any opinions, especially from those in humid areas with experience with this. Also forgot to mention that I bought Reynolds brand baggies that have a vacuum seal. Called "Handi-Vac". This little machine sucks the air completely out of the baggy. I put all my albums and Intercept box's in them. It sucks so much air out it looks like shrink wrap on the albums and boxes!

Found this thread from someone that relates to these issues also (sorry-copied and can't remember who wrote this):

"I am not really sure of the material of the plastic that is included in the 2x2's but I've had coins in them for well into 30 to 40 year range and no problem yet. However, that may just be a short term reaction. I'll let you know it there is any adverse effects in the next 100 to 200 years. Same is true of the plastic in my Dansco and Whitman albums. Not sure of the material in the plastic in them either. Now remember that all plastics are composed of synthetic organic materials that are basically non reative with metals unless exposed to a catalyst and proper temperatures to facilitate the reactions. PVC is a stable compound of Poly Vinyl Chloride and will not readily react with coins. In other words if you leave your coins in the plastic 2x2's and do not expose them to very high temperatures, very high humidity, other possible catalysts, nothing should occur regardless of the plastic materials components. That is usually mistaken on coins as a PVC reaction is usually caused by exposure to extreame heat leaving only a residue of the PVC there which did not react with the matal itself. Other items on coins is usually caused by exposure to the elements of our atmosphere.
Not to get to tecnical but for instance the oddly misundersatanding of sulfur reacting with copper coins is absurd. The Copper in coins reacts with CO2 in the air first. The resulting compound is what reacts with Sulfites and Sulfates to create the geenish stuff we see on coins"

 

In W.Whites book he recomends putting a few new pennies in a ziplock bag , only for silver coins already in a high grade slab or aftermarket holder , not for copper coins , since copper will react with the sulfides in the air 1st , I really don,t see how this can be of much help , actually how much sulfide can a few pennies actually "take out" .
The reason this may seem to work is that the coin is already in a high grade holder , ie nearly airtite , and the siticants , moisture collectors , in the bag .
rzage

 

Guys i live by the sea (literally 5 minutes walk and you will be in the water) yet copper can be saved using intercept and dehumidifiers. knock on wood

Intercept shield holders are not made in all sizes forcing my hand at times