| Sold | Grade | Monthly Average |
| Aug 2013 | 9.4 | $7.63 |
| Jul 2013 | 9.4 | $6.65 |
| Dec 2012 | 9.4 | $5.49 |
| Sep 2012 | 9.4 | $4.30 |
| Jun 2010 | 9.4 | $3.00 |
| Dec 2009 | 9.4 | $3.99 |
| Nov 2009 | 9.4 | $3.99 |
| Jan 2019 | 9.0 | $5.80 |
| Dec 2013 | 9.0 | $63.00 |
| Jul 2018 | 8.0 | $4.80 |
| Jun 2018 | 8.0 | $4.80 |
| Jan 2014 | 8.0 | $6.00 |
| May 2013 | 8.0 | $5.60 |
| Mar 2022 | 6.0 | $7.10 |
| Jan 2014 | 6.0 | $4.49 |