enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Coin cleaning - Wikipedia

    en.wikipedia.org/wiki/Coin_cleaning

    An improperly cleaned Indian Head cent from 1900. Note the wear present, as well as tarnished areas on the "brilliant red" surface. Coin cleaning is the controversial process of removing undesirable substances from a coin's surface in order to make it more attractive to potential buyers.

  3. Conservation and restoration of silver objects - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Dark tarnish spots are sometimes located on the surface and may need to be polished more than once to remove. Over polishing is an issue with silver and can cause harm to the surface of the metal. After polishing, the silver object is rinsed in deionized water and dried with a cotton cloth.

  4. Bronze disease - Wikipedia

    en.wikipedia.org/wiki/Bronze_disease

    The patches of bronze disease can be scraped off the surface using a fingernail or a wooden pick. These properties are all in comparison with verdigris, which is normally a duller shade, uniform across the whole of the affected object, and cannot be scratched off with wood or fingernails. Unlike bronze disease, verdigris serves to protect the ...

  5. Why You Shouldn't Remove Coins on a Gravestone if They ... - AOL

    www.aol.com/lifestyle/why-shouldnt-remove-coins...

    For premium support please call: 800-290-4726 more ways to reach us

  6. Renaissance Wax - Wikipedia

    en.wikipedia.org/wiki/Renaissance_Wax

    Renaissance Wax is also commonly used in the preservation of bronze and copper coins. The wax seals the coins and helps prevent deterioration from moisture and air exposure. It may [ citation needed ] also help prevent the onset of the chloride-related corrosion commonly called bronze disease , although it won't arrest this once started.

  7. Verdigris - Wikipedia

    en.wikipedia.org/wiki/Verdigris

    The Statue of Liberty, showing advanced patination; verdigris is responsible for the statue's iconic green colour.. Verdigris (/ ˈ v ɜːr d ɪ ɡ r iː (s)/) [1] is a common name for any of a variety of somewhat toxic [2] [3] [4] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.

  8. How to Easily Remove Bottles from the Plastic Rings - AOL

    www.aol.com/lifestyle/easily-remove-bottles...

    Plastic rings will (hopefully) soon be eliminated. This hack might soon be an unnecessary relic of the past. Fortunately, many brands are making efforts to reduce or eliminate single-use items ...

  9. Die-deterioration doubling - Wikipedia

    en.wikipedia.org/wiki/Die-deterioration_doubling

    When casually glancing at a coin, the difference is not easy to tell, but when magnified, the difference is obvious on most coins. Another easy way to tell hub doubling from die deterioration doubling is the presence of notched serifs; the small flairs on the ends of letters will appear distinctly separated with the former, whereas they appear ...