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PSA 10: 45-day PSA 10 sold-comp median
GemDelta shows Professor's Research (Celebrations #24) at $1.23 market price (TCGplayer market). Its Delta multiple is 42.3x.
A PSA 10 Professor's Research (Celebrations #24) is currently shown at $63.00. GemDelta labels this as a 45-day PSA 10 sold-comp median.
GemDelta records a 37.7% gem rate for Professor's Research (Celebrations #24), with 1,014 PSA 10 copies out of 2,688 total PSA grades and a 42.3x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| Aug 10, 2026 | $63.00 |
| Aug 9, 2026 | $79.99 |
| Aug 2, 2026 | $40.00 |
| Jul 24, 2026 | $34.00 |
| Jul 20, 2026 | $64.99 |
| Jul 16, 2026 | $69.99 |
| Jul 15, 2026 | $47.69 |
| Jul 15, 2026 | $53.56 |
| Jul 12, 2026 | $45.57 |
| Jul 9, 2026 | $60.00 |
| Jul 5, 2026 | $45.38 |
| Jun 30, 2026 | $69.99 |
Showing the latest 12 of 29 stored PSA 10 comps.