Wow, backpedal much? I don't know if I have any graded cents or dimes, but I think I have a nickel or two around here somewhere. Would you like to keep going with this charade?
My previous place had a heat pump AC and furnace, all electric. Pastures came literally directly across the street and alongside on the east side. West side was deep forest and north a steep hillside. All coins were in extreme NW corner room. BTW, my new place is also all-electric. Do I need to add some type of remediation?
Keep your sales pitch active. I ain’t buying. Seen too much. By the way, a CLEAR majority of my non-modern slabs are cents. One 1909 VDB (non-S), is graded NGC MS65RD, which it was when I bought it off of the old Teletrade. Now, it wouldn’t make RB, and it’s growing cancer spots. Another is a 1913 Type 1 nickel at NGC MS65 that now looks like crap. Another Teletrade coin. Another is a 1942 proof cent that was loaded with reds and blues when I got it. Full dull brown now. I see more at every show I go to, also. Scan tables for the “Cheap slabs” box. Stuffed to the gills with turned toned coins with lofty grades but the coins look like garbage. Saw them at Philly and Pittsburgh/Monroeville and Baltimore just since August. They’re increasing exponentially. And they’re marked 50% off and they sit unsold. If you have the “secret sauce” that prevents it, please share. BTW, I do have some VERY modern coins slabbed - anything that would otherwise be Dansco fodder but there is no slot. Think, for one example, reverse proofs. That allows the whole set to be books and a box. I literally get less changed coins from my Dansco albums than from my 1990’s slabs. My 2009 Lincoln cent proofs have turned, kind of. They have the color of fine Kentucky bourbon.
Ok, first, copper coins are a whole different animal. They do darken over time which is why the TPGs will not guarantee the RD designation for more than 10 years. Second, I just proved that my coins have not turned. There is no advancement of the toning and the toning has not changed colors or darkened at all. Did you bother to even look at the SLQ that I posted? It has very delicate toning that would be destroyed if this "darkening" you are talking about took place. You call it a "sales pitch" as if I am one of the hucksters on the TV show Coin Vault. I'm not a grifter, I'm not coin doctor, I am a collector, a serious collector. Your attempt to impugn my character will do nothing but erode your own reputation on this forum. Listen, I like you, I think many of your posts are hilarious. But when you talk about toning, I think back to the movie Dinner with Schmucks and think "he's talking to the lobster!"
And yet I am being nominated for one of the ANA’s top service to the hobby awards. Go figure. One down, one pending, two to go.
Where is that Stander stored? Look, our locales are not that dissimilar. We’ve probably been to the same Iron Pigs game. Clearly I need to do more to suppress toning changes. What? As I wrote recently, I have taken to seeding my storage with copper rounds as “mine canaries”, because the pure copper should be the most reactive. I can’t get even my silver coins to stop darkening. They are chemically active, that I know.
I did one talk on demonstrating toning silver coins with photographic chemicals. Rosemont 2013, I think. Maybe 14. It was the year that all that obviously AT stuff was getting slabbed, before the TPG’s tightened up. Here’s one slide from my presentation: You see, I HAVE BEEN selected to talk about toning at an ANA national convention.
In a safe with some desiccant, nothing crazy. I lived in Atlantic City for most of the last two decades, the last two have been in Southeast PA.
I did not. You see, in old school monochrome photography, there are specific chemicals whose entire purpose is to, wait for it, TONE METALLIC SILVER various colors. They are known as, wait for it, TONERS. Amazing! The good news for numismatics is they’re getting harder to acquire. Some are pretty noxious stuff. It probably won’t surprise you that sulfur compounds and arsenic abound. My dad used them all in his career. Award-winning printmaker. I had access to ALL of them then. I have to raid my sister’s basement now. Some were leaking. Nasty.
I don’t know the chemistry of diesel exhaust, but I worry about it here. Sometimes it seems every municipal bus line, plus Greyhound, pass right under my window. As I sit here, I swear I’m either smelling diesel or a neighbor is running a fuel space heater.
When was your last eye exam? No, seriously. If you are such the expert, then what phenomenon can cause the luminescence of a coin to decrease without the colors changing? The fact that the colors do not change means that no additional patina was accumulated. Thus it stands to reason that the permeability of the slab is not the cause. (Unless of course you are only talking about copper coins.) The simplest reason is that your eyes are perceiving color differently than they did 10 years ago.