| Country | State | Classification | Source | WallNo | Centennial | Commercial | Location | surroundPic |
| United States | Pennsylvania | Diabase | Reading | 6RB19 | 26476 | y | Front Face (South) | Dscf0110.jpg |
Description |
| dark gray |
| coarse grain |
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No 6RB19 is:
| Picture of the Archive Stone: |
Actual Picture from the Stone Wall:
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