14 printings of Darksteel Ingot
They range from $0.20 to $1.49 — a 7× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Arena League 2004 | PAL04 6 | — |
| Secret Lair Drop | SLD 204 | $1.49 |
| Commander Anthology Volume II | CM2 184 | $1.48 |
| Commander Masters | CMM 378 | $0.55 |
| Commander Anthology | CMA 215 | $0.53 |
| Outlaws of Thunder Junction Commander | OTC 256 | $0.46 |
| Magic 2014 | M14 207 | $0.33 |
| Commander 2017 | C17 207 | $0.31 |
| Darksteel | DST 112 | $0.27 |
| Commander 2013 | C13 241 | $0.26 |
| Commander 2015 | C15 251 | $0.25 |
| Commander 2016 | C16 250 | $0.24 |
| The List | PLST DST-112 | $0.20 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.