1. You should already have a picture of the pawn in Blender.
2. You should have something like this. 
3. Click >Add >Mesh >Circle. 
4. Set the vertices to 3. 
5. Click OK.
6. Right Click on one of the vertices. 
7. Press the X KEY.
8. Click Vertices. 
9. Click 1 vertex.
10. Press the G KEY and drag it to the top of the pawn. 
11. Right click the other vertex, grab it, and bring to the pawn. 
12. Hold the Ctrl KEY and click where the next vertex would be. 
13. Continue this method of tracing. 
14. 
15. Return to Page 1 to spin your pawn.