6 printings of Atog
They range from $0.31 to $3.74 — a 12× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Summer Magic / Edgar | SUM 139 | — |
| Antiquities | ATQ 23† | — |
| Antiquities | ATQ 23 | $3.74 |
| Mirrodin | MRD 86 | $0.33 |
| Revised Edition | 3ED 139 | $0.31 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.