Why this one
Championship aura in sphere form.
Sports Memorabilia / Expensive lane
Finals-Winning Signed Basketball (Celtics).
Yes, really.
Championship aura in sphere form.
Price last checked: $320,722.19.
Championship aura in sphere form. A signed basketball from title-level history is the collectible equivalent of a mic drop. It sits there silently while everyone in the room understands exactly what it is. Low volume, maximum flex. You are not here to save money. You are here to make a decision. Use the live retailer page before buying.
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Reality check
Price last checked around $320,722.19. Use the live retailer page before buying.
Fine print
Updated March 1, 2026. Affiliate links may earn us a commission. Baller mode pages are niche picks for sports memorabilia shoppers who want one direct answer.