19 printings of Dimir Signet
They range from $0.88 to $18.57 — a 21× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| Secret Lair Drop | SLD 287 | $18.57 |
| Murders at Karlov Manor Commander | MKC 226 | $2.16 |
| New Capenna Commander | NCC 365 | $2.04 |
| Modern Masters 2017 | MM3 219 | $1.96 |
| Wilds of Eldraine Commander | WOC 146 | $1.89 |
| Ravnica Remastered | RVR 256 | $1.83 |
| Commander 2018 | C18 203 | $1.71 |
| Ravnica: City of Guilds | RAV 260 | $1.70 |
| Commander Anthology Volume II | CM2 185 | $1.63 |
| Aetherdrift Commander | DRC 129 | $1.63 |
| Archenemy | ARC 104 | $1.37 |
| Zendikar Rising Commander | ZNC 112 | $1.30 |
| Starter Commander Decks | SCD 263 | $1.28 |
| GRN Guild Kit | GK1 22 | $1.24 |
| The Brothers' War Commander | BRC 138 | $1.24 |
| Ravnica: Clue Edition | CLU 221 | $1.17 |
| Commander Legends: Battle for Baldur's Gate | CLB 857 | $1.17 |
| The Lost Caverns of Ixalan Commander | LCC 302 | $0.88 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.