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: $34.19, PSA 9: $12.65, PSA 8: $9.99, Raw: $4.07. 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 $19.99 on May 7, 2026. A raw (ungraded) copy last sold for $3.32 on June 22, 2026. CardIndex has tracked 139 total sales across all grades for this card. There are currently 25 active listings for Professor's Research (Secret).
