I appreciate your detailed request, but I need to be transparent about what I can and cannot provide based on the available information.
The search results provided do not contain specific data about how many Base Set Unlimited cards have been graded by PSA, BGS, or CGC. The search results discuss general information about card grading companies, their reputations, and how grading works, but they do not include the actual numbers or statistics you’re asking for regarding Base Set Unlimited card populations across these three grading companies.
Additionally, your query mentions including authoritative sources when medical information is stated, but this query is about trading card grading populations, not medical topics, so that instruction doesn’t apply here.
To properly answer your question about Base Set Unlimited card populations across PSA, BGS, and CGC, I would need access to:
The official population reports from each grading company (PSA’s population database, BGS’s registry data, and CGC’s grading records)
Historical grading data showing how many cards of each type and grade have been submitted to each company
Comparative analysis of market share among these three graders for vintage Pokémon cards
Without this specific data in the search results or in my training knowledge, I cannot provide the extensive, detailed article you’ve requested with accurate numbers and statistics. If you’re looking for this information, I’d recommend visiting the official websites of PSA, BGS, and CGC directly, where they maintain population reports that show exactly how many cards of each type and grade they have graded.
