Current valuation lens: Short-term movement is stable (0.0% over 7 days), with price action clustered near recent averages. Observed 90-day bounds of $0.30 and $0.49 create a 51% band, matching a high-volatility profile.
Current value is 3.2% below its 30-day reference ($0.38). Graded comparison currently centers on PSA 9 near $10.48, representing +2732% over raw value.
Professor Rowan from Diamond & Pearl is currently trading around $0.37. Price action is stable over 7 days, moving only 0.0%.
Versus its 30-day baseline of $0.38, this card is now 3.2% lower. The 90-day window shows a floor near $0.30 and a peak around $0.49 (51% total spread), which maps to high-volatility movement.
The listed rarity for this print is Uncommon.
Professor Rowan appears in Diamond & Pearl, released in 2007. Its card type is Trainer.
The rarity label is Uncommon. This gives collectors a clear identity footprint for the print.
Card subtype classification is Supporter. Printed card effect: You can play only one Supporter card each turn.
When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card.
Release year for Diamond & Pearl is 2007. Series classification for this set is Diamond & Pearl.
The checklist contains 130 cards, placing it in a mid-size expansion range. As of 2026, the set is 19 years old and fits a legacy-era profile.
In the Diamond & Pearl checklist, Professor Rowan occupies position #112 as a Uncommon card.
Other Professor printings create a useful comparison set for Professor Rowan. Comparable entries in this snapshot: 1 cards, 1 distinct set.
Only one priced comparison is available in this sample ($0.30). Notable alternatives include Professor Rowan #123 (Secret Wonders) at $0.30.
