It’s good and a big step forward, but they don’t have it quite right yet. But I give them big credits for trying. It appears they have an offset...
Mint hasn't announced price yet, but if you get one, it will worth several times what you paid the next day. With only 1945 produced, only a...
Everyone knows Fort Knox holds tons of gold bars. It is also the home of the ten Langbord 1933 double eagles, the 1974-D aluminum cent, and...
Good point and agree. Mintage numbers can be far higher than the numbers released to banks and merchants. Retained coins can be destroyed...
I can remember paper ads from way back that would state "No sales to dealers". This was just to fool folks into thinking the prices were...
Patterns are difficult and tricky. Many have only 10-20 known. There are far more pattern designs than designs put on circulating coins through...
Yes, that would catch imitations of coins in PCGS's database, but only if the imitation was submitted for gold shield service. This service is...
What's really needed is for all submissions sent in above the economy/modern level to be scanned into a shareable database. All scans of new...
Nice work! Have you notified the TPG that certified the fakes? Little surprising the counterfeiter would choose this coin. Only 7 are believed...
Below is Weller's description of a glass brush. I think where he mentions thickness, he's writing about the bundle of fibers, not single fibers....
Advice below is from Cleaning and Preservation of Coins and Medals by Gerhard Weller. Cal [ATTACH]
The New Roach is one of my favorites. This coin has really pretty toning. Cal
Be sure you go to a fabricating jeweler ... one who actually makes jewelry. Some of these folks can do amazing work. Most jewelry stores can't...
I don't think I've missed your point. I was just correcting a misstatement. Of course, the sniffer can do more than XRF because it incorporates...
I wonder if my late in-laws might have used them. He was in the Coast Guard in WWII. Mostly involved in convoying freighters and troop ships...
Doug, You posted the following link: https://www.pcgs.com/news/pcgs-coin-sniffertrade-uses-advanced-technology-to-detect-doctored-coins Here's...
Doug, If you read the PCGS article on the sniffer, it describes energy-dispersive X-ray spectrometry (EDX) as one of the techniques it uses. EDX...
Well, not a gun, but sure, there are instruments like IR spectrophotometers (it's part of the PCGS sniffer) and gas chromatography that will...
Most chemicals used in cleaning don't leave behind detectable residue (assuming the coin is properly rinsed and dried after cleaning). It's the...
John, Nicely done! What was the issue price of the 5-coin boxed set? And yeah, I'll get me one ... like never! Cal
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