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PSA 10: PriceCharting; last PSA 10 sale Jul 16, 2026
GemDelta shows Professor Sycamore (Steam Siege #114) at $12.14 market price (TCGplayer market). Its Delta multiple is 12.8x.
A PSA 10 Professor Sycamore (Steam Siege #114) is currently shown at $154. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 34.6% gem rate for Professor Sycamore (Steam Siege #114), with 345 PSA 10 copies out of 997 total PSA grades and a 12.8x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| Jul 16, 2026 | $150.00 |
| Jul 16, 2026 | $169.99 |
| Jun 29, 2026 | $153.50 |
| Jun 2, 2026 | $175.00 |
| May 26, 2026 | $152.00 |
| May 14, 2026 | $149.99 |
| Apr 19, 2026 | $136.01 |
| Mar 7, 2026 | $150.00 |
| Mar 4, 2026 | $128.50 |