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Cert provenancePSA
PSA 9 · cert 79789880
2021 Donruss Optic Rated Rookie Signature Orange Ryan Mountcastle #RRS-RM 21/75 PSA 9
One physical slab, tracked across Alt. Every entry links to the house's own page. Other copies of the same book are title comps — a different thing.
seen Sep 1, 2026
Live now — current bid $23.00