Professor's Research [Professor Willow]
![Professor's Research [Professor Willow] #SWSH178 Sword & Shield Promo Cards card](https://tcgplayer-cdn.tcgplayer.com/product/278705_400w.jpg)
| Set | Sword & Shield Promo Cards |
|---|---|
| Number | SWSH178 |
| Rarity | Promo |
| Card type | Supporter |
| Released | Nov 15, 2019 |
TCGplayer market Holofoil
$0.41
as of Oct 20, 2026
Price by printing
| Printing | Market | Low | Mid | High |
|---|---|---|---|---|
| Holofoil | $0.41 | $0.06 | $0.48 | $19.74 |
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Converted from USD at the ECB reference rate of .
Price history starts Oct 20, 2026 — the chart appears after 7 days
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