16 printings of Golgari Signet
They range from $0.35 to $7.54 — a 22× 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 292 | $7.54 |
| Ravnica: City of Guilds | RAV 262 | $1.08 |
| Commander Anthology Volume II | CM2 191 | $0.82 |
| Commander Anthology Volume II | CM2 192 | $0.81 |
| Commander Anthology | CMA 218 | $0.65 |
| Ravnica Remastered | RVR 258 | $0.60 |
| Commander 2016 | C16 255 | $0.59 |
| Ravnica: Clue Edition | CLU 222 | $0.57 |
| Commander 2011 | CMD 249 | $0.52 |
| Phyrexia: All Will Be One Commander | ONC 131 | $0.49 |
| Bloomburrow Commander | BLC 272 | $0.42 |
| Duel Decks: Izzet vs. Golgari | DDJ 66 | $0.41 |
| Modern Masters 2017 | MM3 220 | $0.40 |
| Duskmourn: House of Horror Commander | DSC 246 | $0.36 |
| GRN Guild Kit | GK1 73 | $0.35 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.