PSA / BGS / SGC / CGC grading workflow, how do cert IDs and slab photos live in Magento?

Graded singles are a different SKU pattern from raw cards. Each graded slab is a unique 1-of-1 SKU, not a configurable variant. Pattern I default to:

• Grading attribute set, custom attributes for grader (PSA / BGS / SGC / CGC), grade (1-10, plus BGS sub-grades 9.5 / 10 Pristine), cert_number, pop_report_url, slab_front_image, slab_back_image.
• PDP rendering, condition badge with grader logo, cert number, and a verified link out to the grader’s population report. A collector dropping $4k on a 1st Edition Shadowless Charizard can verify provenance in one click before checkout.
• Admin upload guardrail, photo-required validation (front + back of slab) at the product-save step. No slab photos = product cannot publish.
• Anti-counterfeit signal, the “PSA Verified” / “BGS Verified” customer-facing badge differentiates your listings from raw-card competitors on Card Kingdom and eBay.

For stores doing >200 graded SKUs / month, build a bulk-cert-import CSV with cert number + grade + grader + price. PSA, BGS, SGC, and CGC all publish population reports that the cert ID links to, native to the grader, no extra integration needed. Magento handles the storefront; the grader handles the population-report source of truth.