DWLange

Those are interesting and fun to collect, but die clashing typically is not mentioned on coin labels, even when submitted for Mint Error attribution. It occurs with some frequency, though perhaps less so with the SMS coins.

Conder101 provided the best answer. It's an extreme case of die erosion in which the die face is not only drawn outward, but the underlying metal is sinking, as RWB suggested. If you're going to submit to NGC, mark it for Mint Error service, not for VarietyPlus. I won't guarantee that the error attributor will label it as anything noteworthy, since die erosion is not especially rare or interesting.

As with the above illustrated piece, genuine California fractional gold pieces typically have a value statement. This is expressed as text, a numeric fraction, or a combination of both.

I'll add one more thing to what Lisa B (sounds like a rapper to me) wrote: If you use the online submission form, please remember to bring all four copies with you. Many submitters leave one at home for reference, but then there isn't a copy for we at the table to sign as your receipt.

I received my numismatic education on the mean streets (bourse aisles), but I believe there is something to be gained from the diploma program.

You may compare it against a certified example of O-126: https://www.ngccoin.com/variety-plus/united-states/half-dollars/capped-bust-lettered-edge-half-dollars-1807-1836/817874/

It was altered outside of the mint. A dealer would not want it at any price.

I suspect it's a modern replica worth nothing, but Mexican Republic is not my area of expertise.

I've never bought a whizzed coin myself, but when in my early teens my best coin buddy bought an 1862 cent as Gen BU for about $40, quite a sum at that time for our age. An employee at our regularly frequented coin shop set him straight, and I learned a valuable lesson for free. That was 50 years ago, when whizzing was just becoming a thing. Most such pieces went to would-be investors who bought their coins by mail.

The so-called SMS or SP coins of 1964 are not brilliant.

The imaging department is extremely busy, so some delay in posting photos may occur.

A frequent comment in auction catalogs of the 19th Century was "proof for so rare a coin," suggesting that rarity made a circulation issue into a proof. The term was misused as a measure of quality rather than a method of manufacture.

All USA coins are struck with the dies inverted to one another.

It's a very common coin made of base metals and having some rim damage, so it's value is low. NGC's price guide shows a value of $4 for a problem-free example grading Fine.

My issue is with the duplicity, not the causes. If the USPS is unable to deliver on time it should not be altering the data to hide that fact.

The success (regionally, at least) of Bechtler's gold dollars in the 1830s must have made some impression on Congress and the Treasury Department, too. Roger's dates reference the time period when the Bank of the United States, which had served as the federal government's depository for decades, was eliminated by President Jackson's veto of its charter renewal. The banking system was suddenly without any regulation, each state being responsible for approving charters. In the heady atmosphere of speculation in western land, huge amounts of one dollar and other low value bank notes were issued with little to back them. Of course, this all came crashing down around 1837 when the fever broke and specie (gold and silver coin) payments were suspended, bringing on the "Hard Times" of the Van Buren presidency.

It has suffered severe environmental damage that removed a lot of metal, hence the low weight.

I've noticed that in recent months when an item is overdue for delivery by the USPS and then finally arrives late the estimated arrival date on eBay is altered to show the actual arrival date. For example, I ordered something May 6, and the estimated delivery date on eBay was shown as May 10. Then, when it finally got here today, May 17, the estimated delivery date magically had changed to May 17! I tried to open the tracking history on eBay, and I got an error message. When leaving feedback, eBay asked me if the item arrived on time, and I selected NO. I wonder if this will magically be changed to YES.

The only time that strike doubling (some young whippersnappers call it "machine doubling") had any value was in the 1960s, when the collecting of modern coins by errors and varieties first became popular. At that time the U. S. Mint was still denying that it made any errors at all and calling all such coins "counterfeit." This prevented collectors from learning very much about them, and most hobby writers weren't aware of the difference between strike doubling and true doubled dies. There were scads of paperback books published at that time illustrating both with equal status. The Mint became a little more forthcoming during the 1970s and later, and that's when researchers and writers were able to question employees about how the various oddities occurred and actually be shown such pieces on the press room floor. The books from that period onward are far more accurate and useful, and since that time strike doubling has been dismissed as too common to be of further interest. I have quite a collection of those misinformed vintage books which are now quaint and amusing. The most successful and widely distributed at the time was Frank Spadone's Major Variety and Oddity Guide of United States Coins, which went through several edition. Spadone founded the periodical that ultimately was bought by Krause Publications in 1962 and renamed COINS. It's still being published today, so far as I know; I stopped subscribing about 20 years ago.

In a recent post elsewhere, a member presumably paid the standard $65 fee for Express service, and waited patiently to hear back after receipt of submission was confirmed. I don't know the submission in question, but the delay may have been due to the exotic nature of the pieces. It sometimes requires quite a bit of research to identify and authenticate rarely seen coins, medals and tokens.

You don't need to call Customer Service just yet. This is always the first step: https://www.ngccoin.com/account/my-submissions/tracking/

NGC uses the traditional term "strike doubling," but it's the same thing. This is a minor mechanical flaw that does not qualify as a variety and does not carry any premium.

It looks like impressed edge reeding from another dime, but it's impossible to know whether it happened at the mint or sometime later.

I see what looks like strike doubling on the first A in AMERICA and the D and M of DIME. Unfortunately, that doesn't qualify as an attributable variety and adds no value. It's quite common on Mercury Dimes.

For that to be designated there needs to be a better book than Overton. If Steve Tompkins continues the half dollar series beyond his first volume covering the Flowing Hair and Draped Bust types, you may find such distinctions.