| 地点 | United States |
|---|---|
| 年份 | 1969 |
| 类型 | Token |
| 材质 | Brass |
| 重量 | 12.15 g |
| 直径 | 34 mm |
| 厚度 | 1.8 mm |
| 形状 | Round |
| 制作工艺 | Milled |
| 方向 | Medal alignment ↑↑ |
| 边缘 | Smooth |
| 时期 | |
| 说明 | |
| 参考资料 |
| 正面描述 | Map of San Francisco Bay showing location of the Trans-Bay Tube. |
|---|---|
| 正面文字 | Latin |
| 正面铭文 | WORLD`S LONGEST UNDERWATER TRANSIT TUBE TRANS-BAY TUBE 5.6 MILES SAN FRANCISCO BAY KEY LINK IN THE SAN FRANCISCO BAY AREA RAPID TRANSIT SYSTEM SAN FRANCISCO / OAKLAND MD |
| 背面描述 | Tube-lowering barge seen from below. |
| 背面文字 | Latin |
| 背面铭文 | TRANS-BAY TUBE LAST SECTION LOWERED APRIL 3, 1969 |
| 铸造机构 | |
| 铸造量 | |
| Numisquare 编号 | 6206329460 |
| 备注 |