Indus
Indus Valley copper plate, the longest known inscription of this script
By Vasant Shinde, Rick J Willis - Ancient Asia JournalFull article provided under CC BY 4.0 per description on page., CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=78005685
Unicode Chart 
Maps
Https://upload.wikimedia.org/wikipedia/commons/c/c9/Indus_Valley_Civilization%2C_Mature_Phase_%282600-1900_BCE%29.png "Indus Valley Civilization, Mature Phase (2600-1900 BCE)" by Avantiputra licensed under CC BY-SA 3.0
DISCLAIMER: This script is still being researched
Data
| ISO 15924 | Inds 610 |
|---|---|
| Type | Logographic |
| Direction | RtL |
| Glyphs | 400 |
| Earliest Date | 2500 BCE |
| Latest Date | 1900 BCE |
Bibliography
| Author | Year | Publication | Publisher |
|---|---|---|---|
| Coulmas, Florian | 1999 | The Blackwell Encyclopedia of Writing Systems, 221-238 | Blackwell Publishing |