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PSA 10: Median of 3 sales, last 45 days · newest Oct 13, 2026 · checked Oct 26, 2026
PSA 9: Median of 7 PSA 9 sales in the last 90 days, latest 2026-10-23. Grade 9 guide (all graders): $34.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Professor Sycamore (Steam Siege #114) at $13.43 market price (TCGplayer market). Its Delta multiple is 13.3x.
A PSA 10 Professor Sycamore (Steam Siege #114) is currently shown at $179, the median of 3 PSA 10 sales in the last 45 days (newest Oct 13, 2026).
GemDelta records a 34.4% gem rate for Professor Sycamore (Steam Siege #114), with 349 PSA 10 copies out of 1,016 total PSA grades and a 13.3x Delta. That describes the grading profile; it is not financial advice.
Showing the latest 12 of 13 stored PSA 10 comps.