According to Gemrate and data from November of 2025, Professional Sports Authenticator (PSA) graded 1.66 million cards.

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). Thomas J Catalano is a CFP and Registered Investment Adviser with the state of ...

CBSE has announced six major changes for the 2026 board exams that students in Classes 10 and 12 must know. Updates include a new structure for Science and Social Science papers, two annual exam ...

PSA's latest grading labels are commanding a premium, which experts think shouldn't be the case. (PSA / eBay) The reason people grade trading cards and seal them in plastic tombs in perpetuity is to ...