| Sold | Grade | Monthly Average |
| Jan 2017 | 9.4 | $2.43 |
| Jun 2014 | 9.4 | $3.00 |
| Feb 2013 | 9.4 | $4.70 |
| Feb 2011 | 9.4 | $1.10 |
| Dec 2010 | 9.4 | $1.10 |
| Sep 2010 | 9.4 | $1.10 |
| Jun 2010 | 9.4 | $1.04 |
| Mar 2010 | 9.4 | $1.10 |
| Jun 2009 | 9.4 | $2.40 |
| Jan 2008 | 9.4 | $4.00 |
| Feb 2023 | 9.0 | $11.50 |
| Sep 2017 | 8.0 | $2.10 |
| Dec 2016 | 8.0 | $1.80 |
| Oct 2015 | 8.0 | $2.40 |
| Apr 2019 | 6.0 | $1.53 |
| Apr 2018 | 6.0 | $1.53 |
| Jun 2015 | 6.0 | $1.80 |
| Apr 2015 | 6.0 | $1.80 |
| Nov 2013 | 6.0 | $1.80 |