| Location | Japan |
| Year | 63 (1988) |
| Type | Medals/Commemorative medals |
| Composition | Silver plated bronze |
| Weight | |
| Diameter | 38 mm |
| Thickness | |
| Shape | Round |
| Technique | Milled |
| Orientation | Medal alignment ↑↑ |
| Edge | Plain |
| Period | |
| Reference(s) |
| Obverse description | Seikan Tunnel and a train. |
| Obverse lettering | |
| Obverse script | |
| Reverse description | Map of the Seikan Tunnel. |
| Reverse lettering | ?????????? ?????????? ?????? F ??63?3?13? (Translation: Commemorating the opening of Seikan Tunnel Pure SIlver plated Bronze Proof F 13th May, Showa 63) |
| Reverse script | |
| Mint | |
| Mintage | 63 (1988) - Proof - 15 000 |
| Catalog ID | 6911038390 |
| Comments |
