11 printings of Volcanic Hammer
They range from $0.08 to $0.28 — 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.
| Junior Super Series | PSUS 7 | — |
| Ninth Edition | 9ED 226★ | — |
| Seventh Edition | 7ED 226★ | — |
| Eighth Edition | 8ED 231★ | — |
| Starter 1999 | S99 123 | $0.28 |
| Eighth Edition | 8ED 231 | $0.27 |
| Portal | POR 154 | $0.21 |
| The List | PLST 8ED-231 | $0.17 |
| Seventh Edition | 7ED 226 | $0.12 |
| Ninth Edition | 9ED 226 | $0.08 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.