| Sold | Grade | Monthly Average |
| Mar 2015 | 9.4 | $1.10 |
| Oct 2011 | 9.4 | $1.10 |
| Jan 2010 | 9.4 | $1.00 |
| Jul 2003 | 9.4 | $1.40 |
| Jun 2003 | 9.4 | $2.00 |
| Sep 2002 | 9.4 | $2.00 |
| Aug 2002 | 9.4 | $2.00 |
| Jul 2002 | 9.4 | $2.00 |
| Mar 2016 | 8.0 | $1.35 |
| Feb 2015 | 8.0 | $1.20 |
| Dec 2012 | 8.0 | $0.90 |
| Oct 2012 | 8.0 | $0.90 |
| Feb 2015 | 6.0 | $1.20 |