Skala Sheldon: Perbedaan antara revisi

'''Skala Sheldon''' adalah skala penilaian koin dengan nilai maksimum pada [[Nilai|poin]] 70, yang digunakan dalam penilaian [[numismatik]] untuk menentukan kualitas koin. [[Sertifikasi Koin|Jasa grading koin]] ''American Numismatic Association'' (ANA), ''[[Numismatic Guaranty Company]]'' (NGC), ''[[Professional Coin Grading Service]]'' (PCGS), secara resmi berpedoman pada Skala Sheldon dalam menentukan standar penilaiannya.<ref name="standards">{{Cite book|year=2013|title=The Official American Numismatic Association Grading Standards for United States Coins|url=https://archive.org/details/officialamerican0000amer_x2y8|location=Atlanta, GA|publisher=Whitman|isbn=978-0794838249|edition=7|others=Bressett, Kenneth E.; Bowers, Q. David; American Numismatic Association.|oclc=857586264|url-status=live}}</ref><ref>{{Cite web|url=https://www.ngccoin.com/coin-grading/grading-scale/|title=NGC Coin Grading Scale|access-date=7 April 2023|website=www.ngccoin.com|language=en-US|quote=NGC uses the internationally accepted Sheldon grading scale of 1 to 70, which was first used in the United States in the late 1940s. This scale was adopted by NGC when it began operations in 1987 and is considered to be the industry standard.}}</ref><ref>{{Cite web|url=https://www.pcgs.com/grades|title=PCGS Grading Standards|access-date=7 April 2023|website=www.pcgs.com|language=en-US|quote=PCGS builts its grading standards upon the Sheldon Scale when it introduced the concept of encapsulated, third party grading in 1986}}</ref> Skala Sheldon diciptakan pertama kali pada tahun 1949 oleh seorang numismatis dan psikolog terkemuka [[William Herbert Sheldon]].<ref>{{Cite web|url=https://www.govmint.com/coin-authority/post/coin-grading-what-you-need-to-know|title=Coin Grading: What You Need to Know|date=6 Maret 2020|access-date=22 April 2023|website=www.govmint.com|language=en-US|quote=In 1949, Dr. William H. Sheldon, a famous numismatist, developed what is referred to as the Sheldon Sclae}}</ref><ref>{{Cite web|url=https://www.encyclopedia.com/medicine/encyclopedias-almanacs-transcripts-and-maps/sheldon-william-herbert|title=Sheldon, William Herbet|access-date=22 April 2023|website=www.encyclopedia.com|last=Alic|first=Margaret}}</ref>