About Professor's Research (Secret)
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: $40, PSA 9: $17, PSA 8: $15.75, Raw: $4.55. The most recent PSA 10 sale was $45 on April 18, 2026, with 2 sales tracked in the last 30 days. The most recent PSA 9 sale was $25 on April 28, 2026. 188 copies of Professor's Research (Secret) sold in the last 30 days across eBay, Goldin, and other marketplaces. CardIndex has tracked 6 total sales across all grades for this card. There are currently 31 active listings for Professor's Research (Secret).
