20 printings of Azorius Signet
They range from $0.27 to $13.95 — a 52× 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 286 | $13.95 |
| The Brothers' War Commander | BRC 133 | $0.46 |
| Commander 2020 | C20 238 | $0.44 |
| Commander Masters | CMM 941 | $0.44 |
| Archenemy | ARC 103 | $0.44 |
| Ravnica Remastered | RVR 250 | $0.42 |
| Modern Masters 2017 | MM3 215 | $0.41 |
| RNA Guild Kit | GK2 24 | $0.39 |
| Neon Dynasty Commander | NEC 145 | $0.38 |
| Dissension | DIS 159 | $0.38 |
| Crimson Vow Commander | VOC 161 | $0.37 |
| Bloomburrow Commander | BLC 265 | $0.36 |
| Murders at Karlov Manor Commander | MKC 224 | $0.35 |
| Tarkir: Dragonstorm Commander | TDC 312 | $0.34 |
| New Capenna Commander | NCC 361 | $0.33 |
| Starter Commander Decks | SCD 259 | $0.32 |
| Ravnica: Clue Edition | CLU 219 | $0.32 |
| Duskmourn: House of Horror Commander | DSC 240 | $0.31 |
| Commander 2018 | C18 196 | $0.27 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.