1809 Capped Bust Dime (You Vs PCGS)

I'll take a guess and say AU-55.

With the every limited knowledge I have towards this series I'll just throw this out there and see if it sticks
MS-62

yowza

i think this one is a tad better than the 05.
I'm also going with MS64

For those of you who guessed MS(64), you were right on! CAC apparently agrees!



I have seen this greenish spot that I circles in blue in the lower right side of the reverse--it doesn't always show up clearly--only from certain angles. Is this technically verdigris? PCGS and CAC are both fine with it--given how insanely small the spot is on an already small coin, but I'm curious as to the nature of this "green" spot that looks to be different from regular toning.

such a tiny little spot. good eye, great grade and great acquisition.

although there are several contaminants that can cause verdigris, the only ones that I can see this coin being exposed to is a pvc laced holder long enough to impart that (doubt that). it could be a metallic inclusion or discoloration from minting materials since its such an early piece. the other option is being improperly stored in a high humidity environment. for me, this is the most likely cause. looking around the coin quickly, I see at least two spots that could end up like that one. a small amount condensation sitting on the surface in an airtight holder for an extended period of time.

n an airtight holder, the spread is unlikely if the holder is completely sealed and the coin was dry. Verdigris is a surface corrosion product, it doesn't "live" like mold. It can only form if the coin's surface is exposed to moisture, oxygen, and/or reactive chemicals. In a sealed, dry environment, these conditions are absent, so the corrosion won't progress or transfer to other coins.

just to be safe, avoid storing it with paper, cardboard, PVC, or other materials that can release moisture or chemicals even in a sealed environment like a safe.

my bet is that it is stable at this point but since you have some high def photos, I would set a tickler in my phone to inspect the coin at least once a year taking photos, and comparing to these ones. if there is any sign of changes to the surfaces anywhere, I would be inclined to send it in for conservation or at least consult with someone more knowledgeable with this. I am not familiar enough with that process as to what would happen to the original holder and verbiage on it along with the bean.