| Sold | Grade | Monthly Average |
| Nov 2020 | 9.4 | $75.00 |
| Jul 2018 | 9.4 | $75.00 |
| May 2015 | 9.4 | $54.99 |
| Jan 2012 | 9.4 | $44.80 |
| Dec 2011 | 9.4 | $40.00 |
| Jun 2011 | 9.4 | $40.00 |
| Nov 2009 | 9.4 | $33.00 |
| Jul 2023 | 8.0 | $49.00 |
| Apr 2021 | 8.0 | $60.00 |
| Sep 2020 | 8.0 | $54.00 |
| Sep 2014 | 8.0 | $44.00 |
| Jul 2012 | 8.0 | $37.95 |
| Oct 2023 | 7.0 | $30.00 |
| May 2022 | 6.5 | $27.00 |
| Dec 2020 | 6.0 | $45.00 |
| Mar 2013 | 6.0 | $24.00 |
| Dec 2012 | 6.0 | $24.00 |
| Nov 2021 | 4.0 | $18.00 |
| Jan 2016 | 4.0 | $22.00 |