Has anyone used Coin Edge Holders from Amos Advantage?????? GOOD??? BAD???? Ugly????? They say or claim the coin does not rotate..... I was wondering is anyone has used or heard anything about them.... Thanks for your help, Neal
can you post the link? I bought a few 'CoinWorld' holders a while back. the page claimed they were completely inert. Well, i put a couple Unc eagles in them that i have had for a decade or so with no issues. A few months after putteing them in the coinworld holders, they start to tone. so - stay clear away from the coinworld holders UNLESS you want to tone coins me... i didnt lol I have come to the conclusion... if the product is not known (like Intercept shield or one of the other more known makers)... dont do it. I dont like intercept holders myself (so sorry spock ). If i am going to put the coin in a plastic holder, i prefer the bigger ones. They fit better with all the other coins i have that are in plastic. But they do protect the coins from what i hear.
http://www.amosadvantage.com/scotto...tegory=CNHCE&category=CNHCE&part_no=&Tab=coin I would just stick to IS holders, or slabs for higher $ coins.
well.. i do like what it says the holder is made from although Mylar is not plastic, but Polyester film. Either way, they do say they are Mylar. But so to do sites selling Kointain's Saflips. Sites say the flips are mylar, but they are actually made from PET - a type of plastic. I have an email into several sellers and (i think) the makers of the flips to see what they say about what material the flips are made from. What i dont like about these coin edge holders is how you seat them. You have to push down inthe cneter - thats where the coin is. So you are forcing contact between the coin and the case. Couldnt this cause friction marks or other types of contact marks? Not a big deal for the circulation finds i may pull and keep... but what about proof or MS coins?? It might be a good idea to buy a few, and test them out. Make sure they wont do more damage then they are trying to prevent
I've never heard of them myself but then too, many years ago no one heard of PCGS or NGC. Dansco wasn't always around either. If this organization is new they too may someday be one of the better or well known companies. Difficult to tell sometimes.
I am getting tired of all these companies selling products that harm the coins and currency they are supposed to protect. Sellers saying the item is safe when its not. Sallers saying it archival safe, when its not. I am especially tired of seeing every product out there saying its used by the Smithsonian. How many products does the Museum use? I would think they would find the 1 or 2 that works, and be done. I looked through the Smithsonians website, and sent an email asking specificly which product they use. Hopefully they respond. I am just tired of trying to interpret what the seller is really selling. Im tired of trying to figure out what chemical is safe and which one is not. Mylar, Mylar-D, Prolar, Kodar, Melinex 516 ect, ect ect.... Im tired of second guessing whats safe and whats not. I spend years building a collection, and dont want it ruined because of a bad decision on storage. PVC is bad, Acetate is not good, is acrylic? What about triacetate? polystyrene? or what about SKC type SH72S? I know i do not have the ability to test all these materials. I am also not chemical engineer who can look at a spec data sheet and know off hand what paragraph A says about sub-section 93 of paragraph B. What i read on 1 chemical report back when i was researching currency sleeves, was that all Mylar-D is safe, while not all Mylar was. But from what i find on google for Mylar... Mylar and Mylar-D appear to be the same thing?!?!? and Mylar is PET... PET is what they make milk jugs out of, isnt it? Milk jugs are made from HDPE or high density polyethylene... guess what Mylar is ... polyethylene terephthalate. very close cousins i think.... I just hope someone in the Smithsonian who has the knowledge shares it so we may all benefit. I know most of us have alot at stake choosing the right product.... and none of us wish to see green or black slime on our coins 20 years from now
Neal, what is your goal for the coins you expect to holder? Just for long term safety with the minimal amount of time checking their progress, Or to show the coins to others and have them handled safely, OR to prepare for selling sometime in the next 10 years. The Goal of your collecting plays a part in decisions. Also how many coins are we talking about? Do you have 300- '70S small date lincolns to preserve for selling, or 1- 1989 ASE for showing? I personally prefer a "mylar" or non-pvc "archival" plastic flip that is heat sealed. I feel it is the movement of air and all of the possible "coin toxic" substances it carries into the holder that produces 99% of coin problems. A heat sealed 2x2 prevents this. I have even put some ( with pocket change and salt granules) under water for a day or more with with no leakage. Even airtites(tm) are not as air tight. Intercept just fights the "toxic materials" rather than preventing entry. Slabs are just as porous generally. A heat sealer costs about $50 on Amazon. Also prevents having coins switched when selling. JMHO Jim
One thing i read on the making of PET, is that when its heated or melted, it gives off a gas. This is one of the problems i have with PET, becuase during the making of a flip, the gases released can coat the flip itself, and then get to my coins. also, read this PET is not Mylar. PET is a polyester film, yes. But its different then mylar. Here is an email i got back from the makers of Kointains flips So by what they are saying, yes their flips are PET, but NOT Mylar. Mylar brand IS different then PET. even though both are parts of the polyester family. Some might think water is water right? add dirt to the water, and its still water... but would you drink it? TheNoost - i am NOT trying to worry or freak anybody out! I use Mylar sleeves myself. At least i hope they are Mylar, and not a different form of PET. I do not, at this time, have any flips i am using. I have a few assorted 'thing' like slabs and envelopes and other containers. I need to get some sort of flip that really is Mylar or even better - really Archival safe, and not PET pretending to be Mylar.
Desertgem....you make a good point......I am thinking about copper cents.....I was going to get a thousand of them....from amos avantage....I got alot a coins to get in...and yes I am going to sell a few and keep a few..... thanks Neal
Coin Holder Question.................... .......i guess a solution to all this confusion on safe holders and products etc. is a CAC like entity to 'give their seal of approval'........YES?
Everything mentioned so far is why I stick to one manufacturer for coins. I use Whitman for almost everything and after well over 60 years of coin collecting, I have no problems with thier products. I have heard many stories on this forum, coin shows, coin stores, etc about how great some other products may, might, could, should, possibly be but so far I'll just stick to my faithful old Whitman items. Those other products could actually be better but I'd rather just use Whitman products and sleep well at night. HMMM, wonder if I sent a copy of this to them they would give me discounts?
I have recieved a response from the Smithsonian, but nothing substantial yet. I have however recieved a nice response from a person at University of Toronto (who is also a Coin World columnist). I replied back with some additional questions/clarification. So i will post here what i find out.
Oh and one other thing.... the person from the University of Toronto, mentioned coin edge holders as one of the questions i asked in response is if she has used them, and if the 'sealing' process has the potential of scuffing the coin surface. For anyone (like me) who doesnt know what 'Oddy Testing' is, just click here . there is a very nice article on what it is... and give even more credence to using the coin edge holders i think... possibly lol
