| Sold | Grade | Monthly Average |
| Sep 2018 | 9.4 | $23.00 |
| Feb 2016 | 9.4 | $15.00 |
| Jan 2015 | 9.4 | $18.72 |
| Nov 2012 | 9.4 | $22.80 |
| Aug 2011 | 9.4 | $24.00 |
| Jun 2010 | 9.4 | $24.00 |
| Nov 2009 | 9.4 | $24.00 |
| Apr 2015 | 9.2 | $15.00 |
| Mar 2019 | 9.0 | $16.00 |
| Jun 2019 | 8.5 | $12.75 |
| Dec 2017 | 8.0 | $9.12 |
| Mar 2015 | 8.0 | $12.00 |
| Jan 2015 | 8.0 | $12.00 |
| Mar 2014 | 8.0 | $14.40 |
| Mar 2014 | 7.0 | $6.30 |
| Nov 2018 | 6.5 | $9.70 |
| Feb 2023 | 6.0 | $15.00 |
| Aug 2021 | 6.0 | $9.00 |
| Jun 2021 | 6.0 | $9.00 |
| Apr 2017 | 6.0 | $9.00 |
| May 2020 | 5.5 | $8.20 |