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 Replies: 23 / Views: 3,259 |
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Valued Member
 Italy
284 Posts |
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Recently I began removing some coins I had put in their 2X2s about 20 years ago to photograph them, and the Mylar has detached from the cardboard on most of them Hello Hondo, thank you.  I suppose that the adhesive failing is not as bad as it sounds as long as the coin is still protected? Or was the detachment causing issues? Have you noticed any issue with the patina after removing the mylar? Or are the coins just as you put them in 20 years ago? Thanks!  |
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Bedrock of the Community
 United States
25030 Posts |
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Or was the detachment causing issues? Not really, as they were in binders. But it's bothersome that they're a bit slip-shod. Quote:
Have you noticed any issue with the patina after removing the mylar? They were all Spanish colonial reales from the 18th and 19th centuries. As they were all toned to some degree already, I can't say if there was any change in the last 20 years. Inordinately fascinated by bits of metal with strange markings and figures
Edited by HondoB
01/27/2024 4:56 pm
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Valued Member
Italy
284 Posts |
Thank you Hondo! |
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Valued Member
Italy
284 Posts |
Hello all! Fast forward today, I got my hands on some Cowens 2x2 bought from Wizard supplies. Cardboard is definitely thick and sturdy also they were pretty cheap (less than $4 for 100) so that's definitely good! Two things I noticed are that:  the glare of the mylar is pretty strong (side by side with another brand -- no clue which one -- is night and day. total reflection vs I can still see through) the cardboard is kinda "hairy" and creates lots of flakes near the opening Are the two observation in line with your own experience with Cowens? |
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Moderator
United States
187862 Posts |
Not at all. That seems more like the ones I bought at a coin show really, really cheap.  |
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Valued Member
Italy
284 Posts |
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Moderator
United States
187862 Posts |
They look fine from the photo. I wonder if they changed source materials or any parts of the manufacturing process. Do they line up well when you fold them? The previously mentioned cheapies did not fold square.  |
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Valued Member
Italy
284 Posts |
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Do they line up well when you fold them? They are about 1mm skewed. |
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Moderator
United States
187862 Posts |
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They are about 1mm skewed. Yikes!  If not for these being thicker, I would almost swear you got some of the cheap ones I bought at the show. They were definitely thinner/flimsier than the Cowen's I later got from Wizard. |
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Bedrock of the Community
United States
25030 Posts |
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They are about 1mm skewed. I've had a few Cowens 2X2s like that, but the majority of the lot were just fine. Inordinately fascinated by bits of metal with strange markings and figures
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Moderator
United States
187862 Posts |
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I've had a few Cowens 2X2s like that, but the majority of the lot were just fine. Good to know. |
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Valued Member
Italy
284 Posts |
And what about the glare? If you place the 2x2 in front of a light and twist it around, does it become completely "blinded" at certain angles? Tried with a dark copper coin inside if that makes any difference.
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Moderator
United States
187862 Posts |
When I manipulate any 2x2 I do get glare or reflections at different angles, but most angles I can see coin details just fine. I cannot recall if it was better or worse with the cheapies — those now occupy space at the bottom of a landfill!  For what it is worth, I have never been able to photograph a coin in a 2x2 without glare or reflections. It is always recommend to photograph a coin before placing in a 2x2. |
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Valued Member
Italy
284 Posts |
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When I manipulate any 2x2 I do get glare or reflections at different angles, but most angles I can see coin details just fine Ok good to know! I feel more at ease now that I wasn't sold generic ones. I don't really mind the glare/slight skewness since I am mainly interested in conservation for all the coins I will put in flips. As far as glares, I have a bunch of flips from coins bought in Japan (no clue which brand) and they have absolutely zero glare no matter the angle. I will ask which brand they are. |
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Moderator
United States
187862 Posts |
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As far as glares, I have a bunch of flips from coins bought in Japan (no clue which brand) and they have absolutely zero glare no matter the angle. I will ask which brand they are. I think glare is just a part of using BoPET (Mylar). Now I am wondering if the lack of glare means they use a cheaper plastic that may break down sooner. If conservation is key, some glare may be the cost of doing business.  |
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Replies: 23 / Views: 3,259 |
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Posted 01/27/2024 4:21 pm
