8 printings of Penumbra Spider
They range from $0.11 to $0.34 — a 3× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Modern Masters | MMA 157 | $0.34 |
| Modern Masters 2017 | MM3 131 | $0.30 |
| The List | PLST MM3-131 | $0.30 |
| Time Spiral Remastered | TSR 223 | $0.29 |
| Planechase Anthology | PCA 73 | $0.20 |
| Planechase 2012 | PC2 73 | $0.19 |
| Time Spiral | TSP 210 | $0.11 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.