Postojnska Jama
€1.00
| Location | Slovenia |
| Year | 2018 |
| Type | Commemorative medal |
| Composition | |
| Weight | 23.2 g |
| Diameter | 28.6 mm |
| Thickness | 2.9 mm |
| Shape | Round |
| Technique | Milled |
| Orientation | Medal alignment ↑↑ |
| Edge | Plain |
| Period | |
| Notice | |
| Reference(s) |