Professor's Research (Secret) from the Sword & Shield set (#209) is a Pokemon trading card released in 2020. It has a rarity of Secret Rare. Current fair market values for Professor's Research (Secret) are PSA 10: $32.40, PSA 9: $19.97, PSA 8: $9.99, Raw: $4. The most recent PSA 10 sale was $32.40 on May 17, 2026, with 26 sales tracked in the last 30 days. The most recent PSA 9 sale was $19.97 on July 2, 2026. A raw (ungraded) copy last sold for $4 on August 23, 2026. CardIndex has tracked 193 total sales across all grades for this card. There are currently 28 active listings for Professor's Research (Secret).
