I have heard (also seen photos) that PVC could damage banknotes.
Is storing them in acid-free polypropylene envelopes the right thing?
I was also wondering if those plastic parts of the stamp albums can
have the same consequence ... for thirty years my album shows no signs of damage.
Anyone have a better advice?
Citeer: "CoinCollector1243"It is recommended to not store coins or banknotes in PVC for an extended period of time.
Yes- PVC-free (or mylar sleeves) are best for long term storage of banknotes. Many collectors want to store their notes in the cheapest way possible. Shame -considering the value they could be destroying.
Citeer: "CoinCollector1243"It is recommended to not store coins or banknotes in PVC for an extended period of time.
Yes- PVC-free (or mylar sleeves) are best for long term storage of banknotes. Many collectors want to store their notes in the cheapest way possible. Shame -considering the value they could be destroying.
Agree with your thoughts.
I am currently torn between storing coins in trays versus keeping them in Mylar sheet albums. This is compounded by my inability to choose the Mylar sheet albums and the flips. The coins I have are not valuable, most of them are common.
Among the Mylar sheet albums - any specific dealer recommendations, preferably UK
Citeer: "CoinCollector1243"It is recommended to not store coins or banknotes in PVC for an extended period of time.
Yes- PVC-free (or mylar sleeves) are best for long term storage of banknotes. Many collectors want to store their notes in the cheapest way possible. Shame -considering the value they could be destroying.
Agree with your thoughts.
I am currently torn between storing coins in trays versus keeping them in Mylar sheet albums. This is compounded by my inability to choose the Mylar sheet albums and the flips. The coins I have are not valuable, most of them are common.
Among the Mylar sheet albums - any specific dealer recommendations, preferably UK
I just searched for coin holders on eBay but these may be for CDN coins. I do not collect coins so I would recommend you use the same search criteria from your location (to get appropriate sellers). If you ever attend a coin/banknote show then do yourself a favour & pick up some supplies (I always do). That is my first order of business b/c I have found the best mylar currency sleeves (often made in Germany) & they often throw in a CDN coin News publication in for free. You get similar pricing but don't pay for the postage. Also someone was selling coin flips here on Numista in the Swaps/Trades section I believe. Here is a search for mylar sleeves (European style) but again- I encourage you to search your region using 'Mylar currency sleeves' (Avoid the super thin ones sold in China). Lighthouse, Safeguard, Supersafe, Dupont & any advertised as 'museum archival' tend to be perfect.
Mylar is chemically neutral & won't harm anything that is stored in holders made from it.
P.V.C. is pretty harmful towards both banknotes & coins.
Mylar holders are very hard to find here in New Zealand - but I have not found a supplier who will sell them at a reasonable price, let alone, send them to New Zealand.
Citeer: "CoinCollector1243"It is recommended to not store coins or banknotes in PVC for an extended period of time.
Yes- PVC-free (or mylar sleeves) are best for long term storage of banknotes. Many collectors want to store their notes in the cheapest way possible. Shame -considering the value they could be destroying.
Agree with your thoughts.
I am currently torn between storing coins in trays versus keeping them in Mylar sheet albums. This is compounded by my inability to choose the Mylar sheet albums and the flips. The coins I have are not valuable, most of them are common.
Among the Mylar sheet albums - any specific dealer recommendations, preferably UK
I just searched for coin holders on eBay but these may be for CDN coins. I do not collect coins so I would recommend you use the same search criteria from your location (to get appropriate sellers). If you ever attend a coin/banknote show then do yourself a favour & pick up some supplies (I always do). That is my first order of business b/c I have found the best mylar currency sleeves (often made in Germany) & they often throw in a CDN coin News publication in for free. You get similar pricing but don't pay for the postage. Also someone was selling coin flips here on Numista in the Swaps/Trades section I believe.
Here is a search for mylar sleeves (European style) but again- I encourage you to search your region using 'Mylar currency sleeves' (Avoid the super thin ones sold in China). Lighthouse, Safeguard, Supersafe, Dupont & any advertised as 'museum archival' tend to be perfect.
Mylar yes, but not easy to find in my place. Polypropylene should be the same, does anyone agree?
This afternoon I found: a diary with many sheets of paper, very light and thin, without ink lines. It should be the best thing to put paper inside paper, without big pressure or ink. Touching notes without hands, just with the paper pages. Isn't it better than any plastic matter, that we don't know in the future what deformation it can get, and the heat could liquefy it?
Mylar is just a brand name for BoPET or biaxially-oriented polyethylene terephthalate so it's not the same as PP.
PET is rigid and snaps while PP is more flexible and stretches.
Paper can be detrimental too if it has a high acid content also cases like a house fire with temperatures where your banknote collection's plastic sheets melt your paper sheets would soon follow and go up in flames.
Citeer: "Idolenz"Mylar is just a brand name for BoPET or biaxially-oriented polyethylene terephthalate so it's not the same as PP.
PET is rigid and snaps while PP is more flexible and stretches.
Paper can be detrimental too if it has a high acid content also cases like a house fire with temperatures where your banknote collection's plastic sheets melt your paper sheets would soon follow and go up in flames.
-Agreed. Went to an RCNA (Royal Canadian Numismatic Association) workshop 2 years ago presented by a museum curator. It & the one on grading were probably the biggest eye-openers for me as a collector. She told countless sad stories about collections (expensive notes/coins) ruined by improper/poor storage. Almost every coin collector raised his/her hand when asked if anyone experienced damage from cheap plastic (or paper) storage. Paper is bad due to the bleach (employed to whiten the pulp fibre) leaching into the banknote. Moisture is also a "no-no."
Is BoPET (Mylar) and PET the same thing? My dad at taiwan said all of the banknote sleeves at taiwan is made of PET and I am wondering if it is safe for banknote.
I'm sorry I cannot tell you but hopefully @Idolenz knows.
I can tell you that there are still many sellers on eBay who are selling PVC currency sleeves so buyer beware.
Some of these are older style currency sleeves- look good but are to be avoided. There are also Chinese sellers who are selling bulk quantities (100-500) of sleeves for impossibly cheap. I would avoid these too b/c you won't know whether they're safe & they're typically super thin/flimsy.
Good PVC-free sleeves should be about $0.40 to $0.60 per sleeve in bulk (50- 100) & more (up to $1 each) in smaller quantities or in the larger size formats. They're not so flimsy & therefore protect the note a little when moving the note. If your note is valuable to you than you should be able to afford the extra 50 cents to $1.00 to protect it.
Look for terms such as PVC-free, archive or "archival quality" & "acid free."
Let's say all BoPETs are PETs but not all PETs are BoPETs. The structure of Mylar is what differentiates it from your run of the mill drink bottle.
I am not really that familiar what specific polymers are used by all the different manufacturers and if it is even possible to use standard PET as a thin film for flips. Not really my kind of speciality chemistry.
KTTIs BoPET (Mylar) and PET the same thing? My dad at taiwan said all of the banknote sleeves at taiwan is made of PET and I am wondering if it is safe for banknote.
Yes - they are one and the same chemically. The ONLY difference between BoPET and PET is the Bi-axial orientation (Bo) of the molecules.
One other thing, try not to get too specific about searching only for Mylar - Mylar is a Dupont tradename for BoPET.
Any plastics supplier should be able to provide you with BoPET or PET sheets that you can cut to size and then heat seal all around to safely store your notes.
Yes and to answer your question - PET is safe for long term storage of your notes.
There are other options as well (read this article) - I am going to purchase transparent 0.5mm thick acrylic, cut them to size and then use them to safely store my most expensive notes. I mean, the Bank Of Canada Museum must know what they are talking about right?
I'm folloeing them. Trust this helps.
If I keep quiet & walk away, it simply means..your stupidity isn't worth any more of my time.
