striations: fine lines that appear on dies or planchets. Striations are natural and should not be confused with: Hairlines.
Striations
Term for the incuse polish lines on the die which result in raised lines on coins. These are usually fine, parallel lines though on some coins they are swirling, still others with criss-cross lines.
Striations - Incuse marks caused by rolling bars during planchet production.
Strike - The process of impressing the design from a die into a planchet to make a coin, token or medal.
Striations
Thin, light raised lines on the surface of a coin, caused by excessive polishing of the die.
STRIATIONS
A series of parallel and thin lines. See Die Polishing Lines, and Planchet Striations.
STRIKE ...
die striations Raised lines on coins that were struck with polished dies. As more coins are struck with such dies, the striations become fainter until most disappear.
die trial A test striking of a particular die in a different metal.
Die striations - Raised lines on coins that were struck with polished dies.
Die trial - The test striking of a particular die in a different metal such as copper of aluminum.
Striations
Lines on the surfaces of a coin caused by defective PLANCHETS used during the minting process.
Strike
The process of impressing an image onto a PLANCHET during the minting process. Strike plays an important role in the GRADING of a coin.
Die striations between stars 2 and 3 and stars 10 and 11. Stars 1, 2, and 13 weakly struck at centers. ATES connected at top by crack.
Purchased from Mal Varner on February 25, 1972.
planchet striations
Fine, incuse lines found on some Proof coins, though rarely on business strikes, usually the result of polishing blanks to impart mirrorlike surfaces prior to striking.
plated ...
Planchet striations
Fine, incuse lines found on some Proof coins believed to be caused by polishing of the blanks prior to striking. Also see: Adjustment marks, Burnishing lines, Die striations, Roller marks ...
Planchet hairline striations - If a planchet is polished heavy enough before being struck, the striations will appear as hairline scratches into the coin's surface rather than above the coin's surfaces as the case would be from die polish striations.
adjustment marks - Small striations or file marks found on early United States coins. Made during planchet preparation (before striking) by drawing a file across the planchet to remove excess metal, resulting in a series of parallel grooves.
die polishing striations: Raised lines on the surface of a coin caused by abrasive polishing of the die that struck it
error: A coin struck with a significant enough or amount of flaws that it should not have been permitted into circulation ...
The pronounced planchet striations seen on this copy are not found on the originals. The obverse of the reproduction has a similar style of lettering to the original but with slightly thicker lines.
All specimens have large, raised die striations on the reverse left of the mintmark. The obverse of this date is usually strong while the reverse is weak.
Today, specialists believe that only 15 originals and 425 "restrikes" of the 1879 Flowing Hair design were made, with the originals lacking the die striations of the later pieces.
One negative of Kointain Saflips is their horizontal striations, which are unsightly and can interfere with viewing of the coin inside. These flips also have sharp corners.
On the lower side they show nothing but rough hatchings or striations, proving that the anvil, or a die let into it, on which the lumps of electrum were dropped while in a molten condition, ...
Reeding - A design made up of vertical striations applied to the circumference of the coin’s edge. The product of semi- and fully-automatic coining machines developed in the late 18th century, reeding helps to deter clipping.
flow lines: Microscopic striations in a coin's surface caused by the movement of metal under striking pressures.
follis: A Roman and Byzantine coin denomination; plural is folli.
The surfaces are perfect and the mirrors are ultra deep. This issue has die polish striations on the die and in this example they look like some kind of hypnotizing hologram when the coin is turned in the light. It is a totally awesome coin! ...
One may also examine the tusk up close under a 30X magnification and see if the depth of the carvings are deeper than the natural striations of the tooth or tusk. If so, it is a contemporary piece.
The above example has split completely in half and you can see parallel striations are present as the metal has split. This split has occurred after the striking of the coin.
Made of red and/or black clay, many with striations on the back showing the fibers of the papyrus. I have a small group of these, each listed separately below with a photo so you can pick your favorite.
This sharing of metal tended to favor the broad surface of the 5 rather than the fine striations of the shield so the lines at the top of the shield often visibly display a weakness in that area.
The earliest coins were made of electrum with a standardized 55% gold, 45 silver and 1-2% copper concentration and had either no design or a some apparently random surface striations on one side and a punch impression on the other.
We can almost be sure that the inner section of the die, which would have presumably left a granular scar, was probably quite flat and more easily pushed into the upper die (were we see the granular damage with striations) than the outside shank ...
This makes grading more difficult since the surface condition must be carefully considered to detect the difference between strike and wear. Due to improper die preparation, it is also common to see fine, parallel field striations on high grade ...
The all-time auction record is held by Heritage 5/07: 2239 (graded MS65 by PCGS; it sold for $40,250). All 1866 quarter eagles have satiny luster and surfaces that show pronounced horizontal die striations.
gold coin pattern with a face value of $4 minted in 1879 and 1880 striations Incuse marks caused by rolling bars during planchet production strike - The process of impressing the design from a die into a planchet to make a coin, ...
 See also: Struck, Coin, Silver, Dollar, Proof
|
