7 printings of Knightly Valor
They range from $0.06 to $0.23 — a 4× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Double Masters 2022 | 2X2 14 | $0.23 |
| Wilds of Eldraine: Enchanting Tales | WOT 8 | $0.20 |
| The List | PLST RTR-13 | $0.19 |
| Core Set 2019 | M19 20 | $0.16 |
| Return to Ravnica | RTR 13 | $0.11 |
| Magic Origins | ORI 22 | $0.06 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.