We’re not too bad at it, either, and you don’t have to send your coins to us, or even pay us. I’m just saying.
FWIW, for many, many years, I have had coins in cardboard 2x2's, Saflips, airtites, coin tubes and even Mint bags. IMHO, if you avoid plastics contaminated with PVC and maintain a cool, dry environment, it shouldn't matter too much which method you use. NOTE: No method is completely airtight unless you plan on storing them in a vacuum chamber. Edit: Changed "bank bags" to "Mint bags".
No coin slab or coin holder made is airtight. The only truly airtight containers that are readily available are jars like those you'll see here - https://www.amazon.com/Airtight-Enc...son+Jars+Rubber+Gaskets&qid=1619548148&sr=8-8 There are many different brands and they come in all kinds of sizes.
I guess that would depend on what evaluation you want. If you just want authentication vs. a grade and slab label, or a conservation, it would direct you to different companies, in my opinion.
If you are looking to sell your coin(s) then I think PCGS labels seem to attract the most money, but only if the buyer is buying the label and not necessarily the coin.
@PamR, the members here are trying to help you but you have left them guessing at what you want. I realize that you may not know all the terms associated with coin grading and evaluation & etc. But reduce our work load a bit by telling us what you are trying to accomplish and then maybe we can focus our answers to your exact needs.
I am sorry I have caused a workload. I admit, just getting into coins I have a lot of questions. I am not here to sell, run a race, or work anybody extra. From U.S. Coins and Foreign coins I’m going through, I want to preserve for my son. Yes some are damaged, some are beautiful, some are just a coin as some state. I realize y’all been here a while. Lots of newbies come here. Many have been very informative and patient. Mr. Weinberg suggested this site to me. Nice man he is. U.S. had given me his name and after reading about him, top notch. So I came to this site so I can learn after his suggestions. Some of the foreign coins of my dad’s and my old U.S. Coins, just was curious to get them graded. No I do not know the terms but if someone posts something, I look it up. I have posted many of coins and the questions I get, “what ya asking”. Why this? I post something and God forbid if I say no mint marking, but I just state it’s a beautiful coin. Well that is why I posted it. The only question I was asking was, where is the best place to send a coin to be evaluated or graded. Not to sell just for the clear purpose of the history and preserving it. All of you have different opinions which is understandable. Because you do not have the coin in hand. So I will just use here to read the forums. Many come here to sell but many come here to appreciate. My son is a history teacher and I’m getting things together for him as a young teacher and many coins from his grandfather who traveled the world. From coins, currency and stamps. So thank you. Hope that answered some questions. I mean I got an answer from a couple of other members just fine without being drilled as to why. So take this workload off your desk. Case closed. Thank you.
@PamR, I think your best approach may be to use this forum. First of all, it's free. Second, there are many very knowledgeable people here. So, take good pictures of the coins you are interested in, no more than two coins per post and post them on the appropriate Coin Talk Forum: US Coins for those, World Coins for those. Pace you postings so you don't wear people out. Take your coin photos in good light, and with the camera looking straight at the coin, no angles. Good luck.
