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2. Coin storage - Wikipedia

   en.wikipedia.org/wiki/Coin_storage

   An 1886-S Gold eagle in a PCGS plastic coin slab A 1/10th troy ounce American Gold Eagle in a cardboard '2x2' flip, secured with staples A coin folder offers no protection from the elements and is likely to damage coins when pressed in or popped out. Coin collectors have various options for storing their coin collections. The various options ...

3. Zarf - Wikipedia

   en.wikipedia.org/wiki/Zarf

   However, because the holder was more visible, it was typically more heavily ornamented. When coffee began to be served in cardboard cups in the late 20th century, the zarf became disposable as well. The corrugated coffee cup sleeve was invented in 1991.

4. Glossary of numismatics - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_numismatics

   A coin that has not been encapsulated by any coin grading service. [1] reeded edge See milled edge. relief The part of the coin's design that is raised above the field, opposite of incuse. [1] re-strike A coin struck from genuine dies at a date later than the original issue. [1] Some of the 1804 U.S. Silver Dollars were re-strikes. repunched date

5. Staple (fastener) - Wikipedia

   en.wikipedia.org/wiki/Staple_(fastener)

   A heavy duty office staple might be designated as F1667 STFCC-04: ST indicates staple, FC indicates flat top crown, C indicates cohered (joined into a strip), and 04 is the dash number for a staple with a length of 0.250 inch (6 mm), a leg thickness of 0.020 inch (500 μm), a leg width of 0.030 inch (800 μm), and a crown width of 0.500 inch ...

6. Sheldon coin grading scale - Wikipedia

   en.wikipedia.org/wiki/Sheldon_coin_grading_scale

   Improperly stored coins in vinyl 2x2 flips, older albums, and coin holders. Green and gray streaks and/or spots appear on the surface of an affected coin. [33] Black spots MS63 and lower Also known as sulfur spots, these coins are given dark brown to black spots by sulfur in the environment.

7. Alabama Centennial half dollar - Wikipedia

   en.wikipedia.org/wiki/Alabama_centennial_half_dollar

   The Alabama Centennial half dollar, or Alabama half dollar, was a commemorative fifty-cent coin struck by the United States Bureau of the Mint in 1921 as a belated acknowledgement of the 100th anniversary of Alabama's admission to the Union in 1819. The coin was created by Laura Gardin Fraser, the first woman credited with designing a coin.