| Sold | Grade | Monthly Average |
| Apr 2014 | 9.8 | $8.71 |
| Oct 2013 | 9.8 | $10.69 |
| Dec 2012 | 9.8 | $27.00 |
| Aug 2012 | 9.6 | $23.00 |
| Jun 2020 | 9.4 | $3.00 |
| Jan 2017 | 9.4 | $5.00 |
| May 2013 | 9.4 | $6.00 |
| Aug 2012 | 9.4 | $18.00 |
| Aug 2012 | 9.2 | $15.00 |
| Nov 2012 | 9.0 | $13.50 |
| Feb 2020 | 8.0 | $2.60 |
| Jan 2019 | 8.0 | $2.40 |
| Jan 2017 | 8.0 | $4.00 |
| Mar 2015 | 8.0 | $4.80 |
| Jan 2014 | 8.0 | $4.80 |
| Sep 2013 | 8.0 | $4.80 |
| Jul 2013 | 8.0 | $5.05 |
| Feb 2022 | 6.0 | $2.00 |
| Apr 2020 | 6.0 | $2.00 |