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PSA was launched in July 1991 by David Hall, owner of the coin grading company Professional Coin Grading Service (PCGS), to serve collectors as a third-party card grader. [1] At the outset, the business faced difficulties owing to a limited demand from collectors who sought card grading services. [ 2 ]
The Professional Sports Authenticator (PSA) company graded this card a PSA 8 Near Mint-Mint (NM-MT) on their 10-point scale, [31] [32] the highest grade given to a T206 Honus Wagner card. Bill Hughes [33] was the official grader of the card, working for PSA at the time. Hughes admitted to knowing that the card had been altered when he graded it.
The Beckett price guide is a graded card price guide, which means it is graded by a 1–10 scale, one being the lowest possible score and ten the highest. In addition, Professional Sports Authenticator (PSA) grades cards 1–10, and can authenticate autographs as well. Other grading companies include Beckett, SGC, and CGC.
For example, if the most prevalent pattern/grade is 2, and the second most prevalent grade is 1, then the Gleason score is 2+1=3. If the neoplasm has only one pattern, the grade of that pattern is doubled to obtain the score. For example, if a tumor is entirely grade 1, the Gleason score would be 1+1=2.
In simpler terms, it serves as a set of criteria for grading assignments. Typically presented in table format, rubrics contain evaluative criteria, quality definitions for various levels of achievement, and a scoring strategy. [1] They play a dual role for teachers in marking assignments and for students in planning their work. [2]
The term has evolved since its first recorded use in American writer Henry David Thoreau’s book "Walden" which reports his experiences of living a simple lifestyle in the natural world, Oxford ...
Clemson wins by a 7-10 point margin. The Tigers get the ACC’s automatic bid and potentially move ahead of Arizona State and/or Boise State in the final rankings, giving Clemson a first-round bye.
Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), P-30 antigen, is a glycoprotein enzyme encoded in humans by the KLK3 gene.PSA is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland in men and the paraurethral glands in women.