| Sold | Grade | Monthly Average |
| Dec 2022 | 9.4 | $14.95 |
| Apr 2022 | 9.4 | $14.95 |
| Mar 2012 | 9.4 | $10.10 |
| Dec 2011 | 9.4 | $9.00 |
| Apr 2011 | 9.4 | $9.00 |
| Feb 2011 | 9.4 | $9.00 |
| Jul 2016 | 8.0 | $18.50 |
| Jun 2012 | 8.0 | $7.20 |
| Apr 2011 | 8.0 | $7.20 |
| Oct 2010 | 8.0 | $7.20 |
| Apr 2016 | 6.0 | $13.50 |
| Mar 2015 | 6.0 | $9.00 |