| Sold | Grade | Monthly Average |
| Nov 2020 | 9.4 | $71.96 |
| Oct 2020 | 9.4 | $89.95 |
| Aug 2020 | 9.4 | $89.95 |
| Jun 2020 | 9.4 | $89.95 |
| Mar 2020 | 9.4 | $89.95 |
| Nov 2019 | 9.4 | $71.96 |
| May 2019 | 9.4 | $89.95 |
| Jan 2019 | 9.4 | $89.95 |
| Dec 2018 | 9.4 | $89.95 |
| Dec 2017 | 9.4 | $99.95 |
| Jun 2025 | 7.5 | $125.00 |
| Feb 2023 | 6.5 | $160.00 |
| Sep 2022 | 6.0 | $108.00 |