Professional Authentication Services & Standards Co LLC, based in Bedford, NH, is a distinguished provider of authentication and grading services for a diverse range of historical collectibles. Specializing in autographs, letters, manuscripts, documents, photographs, rare signed books, stock certificates, bonds, checks, and autographs, PASS-CO offers encapsulation, scoring, and grading services with a straightforward approach to the complexities faced by modern collectors.
Industry leaders in authentication, PASS-CO boasts a team of recognized experts with over 100 years of combined hands-on experience, employing cutting-edge technology to deliver unparalleled authentication services. Ensuring the highest standards, each authentication is accompanied by a PASS-CO PASS, reflecting top-tier expert opinions. With a commitment to prompt, reliable service at competitive prices, PASS-CO offers a unique financial guarantee to stand behind every authentication, setting a new standard in the industry.
As the preferred choice for currency grading among a growing clientele, PASS-CO has expanded its grading activities to meet the increasing demand for fair and consistent grading of currency. Emphasizing its reputation for excellence and reliability, PASS-CO continues to attract dealers and collectors seeking top-tier authentication services. For collectors seeking assurance and quality, PASS-CO stands out as the premier authentication and grading service provider.
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