| Sold | Grade | Monthly Average |
| May 2012 | 9.4 | $215.00 |
| Jun 2014 | 9.2 | $199.95 |
| Jun 2017 | 9.0 | $195.00 |
| Sep 2014 | 9.0 | $102.50 |
| May 2016 | 8.5 | $195.00 |
| Mar 2014 | 8.0 | $152.00 |
| Jun 2023 | 7.5 | $230.00 |
| Jun 2021 | 7.0 | $225.00 |
| Jan 2021 | 7.0 | $92.00 |
| Feb 2019 | 6.5 | $75.00 |
| Oct 2021 | 6.0 | $116.00 |
| Apr 2017 | 6.0 | $140.00 |
| Apr 2020 | 4.0 | $84.50 |
| Jan 2015 | 4.0 | $77.00 |