Based on your comments, and because they are followed by the smiley, I'm not sure if you're being serious or facetious with your post. Or, if I'm completely misinterpreting your post. So for the sake of clarity can you please explain exactly what it is you're trying to say ?
A coin can not wear sitting as you explained but it can easily tone. Any toning is not wear and does not affect the grade.
Agreed, as long as "circulation wear" means being carried around loose in a pocket or purse. But in the old days (such as the pre-1860's) when coins were often stored in trays with sections, one for each coin, wear could (and often did) occur as the coins slid around. Hence the term "slider" often applied to AU-58 coins.
I just meant that the high points lost luster, which is the general definition of circulation for coins, isn’t it? I know it hasn’t circulated, but I’m near certain that it can’t be called uncirculated… so it’s circulated without circulating.
Luster will affect the overall grade of the coin but it has nothing to do with wear of the coin. The amount of wear remains the same.
That is correct. As long as a coin is capable of movement inside a flip, and all coins inside flips are capable of movement, or any other type of holder that allows it to slide around while inside that holder, wear can and will be imparted to that coin. And you've apparently proven that to yourself.
Now there may well be those who do not wish to call that "circulation" wear, but wear is wear, regardless of its cause or how it happened.
I completely agree but the OP clearly stated in the thread title SITTING and that implies no movement. That’s why I said what I did.
I think many of us store our coins in Saflips, but that being said, where and how you store those are important. Coins, even those incased in a slab, are affected by humidity, so dry conditions are important too.
If it was not moved out of the flip, it did not circulate. It is still an uncirculated coin, unless it was circulated before it was placed in the flip. The definition of an uncirculated coin is one that has not been in circulation. Any other view of this fact is erroneous.
MS stands for mint state though, not uncirculated. Clearly you can have coins that are in mint state that have circulated. You can also have coins that are uncirculated yet are not in mint state. Uncirculated is not really a relevant term. There's no way to know for most coins unless you broke them out of a mint set yourself, and the term doesn't describe a state of preservation.