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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 ]
Collectors Universe Inc. is an American company formed in 1986, now based in Santa Ana, California, which provides third-party authentication and grading services to collectors, retail buyers and sellers of collectibles. Its authentication services focus on coins, trading cards, sports memorabilia, and autographs.
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Grading standards have changed over the years. Because collectors and dealers have gotten more selective, an informal "sub-grade" system has evolved. "A" coins are the best of the grade, "B" coins are "solid", and "C" coins are at the low end of a particular grade based on the Sheldon scale, e.g., MS-65. CAC stickers are intended to standardize ...
In the realm of US education, a rubric is a "scoring guide used to evaluate the quality of students' constructed responses" according to James Popham. [1] In simpler terms, it serves as a set of criteria for grading assignments.
The Professional Standards Authority for Health and Social Care (PSA), formerly the Council for Healthcare Regulatory Excellence (CHRE) and the Council for the Regulation of Health Care Professionals, oversees the ten statutory bodies that regulate health professionals in the United Kingdom and social care in England. [1]
Professional Coin Grading Service (PCGS) is an American third-party coin grading, authentication, attribution, and encapsulation service founded in 1985. The intent of its seven founding dealers, including the firm's former president David Hall, was to standardize grading.
A more refined prognosis can be established by consideration of prostate-specific antigen, and grade (i.e. Gleason score in the Gleason grading system). For example, it is common to classify patients into high, intermediate and low-risk groups on the basis of these three factors (TNM stage, PSA and Gleason score).