| Sold | Grade | Monthly Average |
| Jun 2018 | 9.8 | $137.13 |
| Aug 2016 | 9.6 | $65.00 |
| Feb 2016 | 9.6 | $55.00 |
| Aug 2012 | 9.6 | $60.00 |
| May 2020 | 9.4 | $99.95 |
| Oct 2015 | 9.4 | $39.90 |
| Jul 2014 | 9.4 | $42.00 |
| Jul 2011 | 9.2 | $40.00 |
| Jun 2024 | 9.0 | $90.00 |
| Mar 2023 | 9.0 | $51.00 |
| Apr 2018 | 9.0 | $32.00 |
| Aug 2015 | 9.0 | $33.00 |
| Jul 2015 | 8.5 | $30.00 |