I complained about the spots since May of 2009: [ATTACH]
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The whole 2009 series is plagued with spots. My observation is the grading services basically graded them on the number of spots more than any...
CONGRATS! It must have some good luster, beautiful coin.
I would have guessed 66. What held it back?
Man...that 12D! NICE!
64RD
Not an error, just a stain.
Someone either plated it or removed the copper plating. It's what we call PMD, Post Mint Damage.
No mental calibration required when you see a picture like this: [ATTACH]
I'll always prefer a white background. For me, it's a point of reference. I use it to make mental corrections to images. Sometimes if you squint a...
I use a old, cheap Canon SD700IS and a good desk lamp. It's all about the light, angle of the light for me. Also the camera distance and angle. I...
Sexah!
@SuperDave, what happen with your project? I'd like to see some side-by-side before/after pictures.
Absolute FACT. Existing verdigris can provide feed materials to accelerate/induce corrosion elsewhere. That said, verdigris can also be made...
Here's mine, got in a trade with Bob Piazza himself: [ATTACH] [ATTACH] [ATTACH] [ATTACH] PCGS slabbed shows about $275 for 63RB. I wouldn't...
No analytical chemist in their right mind would say "yup, that's BZT". See the sample FTIR spectrum I posted. The S/N is very low and and not...
.....unless it's a high value coin and they suspect foul play.
No need for that, I produced a thick layer of BTZ. As you can see, the signals are barely above noise: [ATTACH]
The article is ~30 years old, check out their IR spectra and compare to a modern FTIR (mine above, 2 years old). LOLOLOL
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