The Sign of Four (1892 Illustrated Edition): 100th Anniversary Collection
| Country | USA |
| Brand | Pleroma Publishing Ltd |
| Manufacturer | Pleroma Publishing Ltd |
| Binding | Paperback |
| ItemPartNumber | 9780995510302 |
| UnitCount | 1 |
| EANs | 9780995510302 |
| ReleaseDate | 0000-00-00 |