DWLange

There's no indication of a RPM.

Those dies actually are fresh, with no signs of wear. The radiant pattern that simulates "starburst" is the result of some liquid dispersal upon striking. Most likely it's a machine lubricant or a cleaning solution. Whether it was on the die or the planchet is uncertain.

It's not a doubled die, but it may have an RPM (repunched mintmark). Here are the dies known for 1930-S: http://varietyvista.com/02a LC RPMs Vol 1/RPMs 1930S.htm The reverse die is simply worn and eroded. It's quite likely that it had been used previously with a different obverse die that failed and then paired with the sharper obverse of your coin.

That's not a DDO, but rather a chip in the die. This occurred to cents frequently during the 1950s-60s, but it largely disappeared with the new obverse hub of 1969 that didn't place these letters so closely together. These "BIE" breaks were very popular with collectors in the 1960s, with books cataloging all the known varieties and even a club dedicated to their study. Nowadays, collectors know more about how coins are made, and BIE breaks are still fun but not worth a premium.

That is truly unfortunate, Roger, but you're correct about there being no deep pockets to underwrite numismatic publishing and printing that isn't guaranteed to generate profits. We authors have to suck up the cost ourselves for the most part, unless one writes a book with mass appeal and the title "How to Get Rich Quick with Coins." I, too, looked into the Newman Numismatic Portal's grants for research, but there is no support for the cost of printing hard copies. It's expected that the book will appear solely at the NNP, though it's possible for users to have the online books printed by a print-on-demand service. I briefly thought of that for my most recent book about Whitman coin folders and albums, but it didn't seem possible to guarantee a quality product. I expect to break even on the printed edition about 20 years after my death.

Machine Doubling and Mechanical Doubling are relatively recent terms (last 15 years or so?), while Strike Doubling is the term that's been used for a couple generations now. It is still used by NGC in explaining to submitters why their "doubled-die" coins are not so certified, because it is the best description of what happened.

There's nothing in your coin that indicates a DDO. The actual DDO-001 isn't much to get excited about either, but there is some extra thickness to the date: http://varietyvista.com/01b LC Doubled Dies Vol 2/1959DDDO001.htm

The steam powered screw presses shook the entire building and were tough on both themselves and associated machinery. The RM underwent a big upgrade in equipment in the early 1880s that brought it into line with the U. S. Mint and most European Mints, too. The problem with being the first to introduce new technology (in this instance steam power for coining) is that others will quickly follow and then improve on it, while the original user tends to be reluctant to see where further change is merited.

Your coin is of the 2-Feathers die state, so it would be attributed by NGC.

Die erosion can cause a similar effect as seen on that coin, but in this instance it's too severe to have occurred without assistance. This coin is one of the many thousands of "processed" pieces, dull and worn 1943 cents that were stripped down to the bare steel, re-plated with zinc and then whizzed to make them bright. These were sold throughout the 1950s-60s, though in most instances the sellers disclosed that the coins' surfaces were enhanced.

Well, Uncle Piedmont (Oliver Hardy) tried to get his kilted Scottish nephew Philip (Stan Laurel) to wear pants, but without success. This is one of the very first L&H comedies, and they hadn't yet assumed the Stan & Ollie characters we've come to love.

Last night TCM ran a number of early Laurel and Hardy comedies, one of which was the 1927 silent two-reeler Putting Pants on Philip. The opening title card references the 1892-93 Columbian Half Dollar, a coin of which many thousands were dumped into circulation. This confirms that enough remained 30 years later that the public would be expected to get the joke.

It's quite minor and not "the" doubled ear variety, which is found here: https://www.ngccoin.com/variety-plus/united-states/cents/lincoln-cents-memorial-reverse-1959-2008/815807/

By the 20th Century it appears that there was rarely more than 1% of tin in cents, and this was merely to comply with the law that 5% of the alloy be a mix of tin and zinc. Eliminating it altogether during 1944-46 doesn't seem to have had any effect on the coins' striking quality, appearance or utility, and the final removal of tin was formalized in 1962. At that point the coins no longer met the definition of bronze and were brass until 1982.

Just a minor correction that has no bearing on the coin discussion: Though it was intended for celebration in 1892, the World's Columbian Exposition was not ready to open until May of 1893.

Conder101 is correct in his assessment. NGC gets a lot of these would-be overdates that are just the products of worn dies.

It looks as though it may have been gently "whizzed," that is, polished with a rotary tool brush.

There is no 1869/8 variety. This is just one of the many "overdates" that Walter Breen described and which have since proved to be simply repunched dates or defective numerals.

It was exposed to a corrosive, which ate away at the copper core. The copper-nickel clad layers are more resistant to such action and remained intact.

That's just strike doubling, which is common and adds no value. The doubling is not in the die, rather it occurs randomly on some coins.

The United Kingdom converted to a decimal pound in 1971, and the replacement coins were all inscribed "NEW" for the next several years, until the old ones were fully retired. It is worth only face value in worn condition.

You would have to pay for both the grading and variety attribution fees, so it's not likely to be worth the expense of having it certified.

No cigar...

Those spots are the result of toning from either particulate matter on the coin or tiny holes in the 2x2 window. They're likely removable with conservation, but the dime doesn't appear nice enough overall to justify the cost of that.