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The first significantly controversial card grade was in fact the first card ever graded by PSA. This was the T206 Honus Wagner card. Originally it achieved a NM-MT 8 grade. This card was originally owned by Sotheby's Sport's Consultant Bill Mastro, and purchased by Wayne Gretzky and Bruce McNall. [3]
The child-resistant locking closure for containers was invented in 1967 by Dr. Henri Breault. [7]A history of accidents involving children opening household packaging and ingesting the contents led the United States Congress to pass the Poison Prevention Packaging Act of 1970, authored by U.S. Senator Frank E. Moss of Utah.
Professional Sports Authenticator (PSA) focuses on sports and trading cards market. PSA/DNA Autograph Authentication and Grading Services focuses on the autographs and memorabilia market. In the publishing field, the company publishes Rare Coin Market Report and Sports Market Report monthly. [7] [8]
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PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
The pressure applied to the tape allows the tape to have better contact with the surface and allows the physical forces between the two to build up. Usually, increased application pressure increases the bond of the adhesive to the substrate. PSA tape laboratory testing is often conducted with a 2 kg roller to increase test uniformity. [13]
Poison Prevention Packaging Act of 1970; Long title: An Act to amend the Federal Hazardous Substances Act to provide for child resistant packaging to protect children from serious personal injury or serious illness resulting from handling, using, or ingesting a hazardous substance, and for other purposes.