| Sold | Grade | Monthly Average |
| Sep 2020 | 9.4 | $99.95 |
| Aug 2020 | 9.4 | $99.95 |
| Nov 2019 | 9.4 | $79.96 |
| Feb 2019 | 9.4 | $99.95 |
| Apr 2018 | 9.4 | $99.95 |
| Mar 2018 | 9.4 | $99.95 |
| Nov 2016 | 9.4 | $99.95 |
| Jun 2016 | 9.4 | $99.95 |
| Mar 2016 | 9.4 | $89.96 |
| Oct 2015 | 9.4 | $89.96 |
| Mar 2015 | 9.4 | $99.95 |
| Jan 2015 | 9.4 | $99.95 |
| Jan 2023 | 8.5 | $94.00 |
| Jul 2025 | 8.0 | $180.00 |
| May 2025 | 6.0 | $121.50 |
| Jul 2019 | 6.0 | $59.00 |
| Nov 2018 | 6.0 | $59.00 |
| Jul 2022 | 5.0 | $43.00 |
| Sep 2022 | 4.0 | $60.00 |
| Jan 2016 | 4.0 | $40.00 |