| Location | United States |
| Year | 1986-1991 |
| Type | Bullion round |
| Composition | Silver (.999) |
| Weight | 31.1 g |
| Diameter | |
| Thickness | |
| Shape | Round |
| Technique | Milled |
| Orientation | Coin alignment ↑↓ |
| Edge | Reeded |
| Period | |
| Reference(s) | X#121 |
| Obverse description | The obverse is a topological map of the Western United States, showing historic Pacific Ocean trade routes. |
| Obverse lettering | NORTHWEST TERRITORIAL MINT 1988 |
| Obverse script | Latin |
| Reverse description | Scales. |
| Reverse lettering | ONE TROY OUNCE .999 FINE SILVER SILVER TRADE UNIT |
| Reverse script | Latin |
| Mint | Northwest Territorial Mint, Auburn, Washington, United States |
| Mintage | ND - - 1986 - - 1987 - - 1988 - - 1989 - - 1990 - - 1991 - - |
| Catalog ID | 2350549480 |
| Comments |
