| Sold | Grade | Monthly Average |
| Apr 2024 | 9.4 | $150.00 |
| Feb 2021 | 9.4 | $76.48 |
| Dec 2020 | 9.4 | $69.95 |
| Aug 2020 | 9.4 | $69.95 |
| Mar 2020 | 9.4 | $62.96 |
| Jun 2019 | 9.4 | $69.95 |
| Dec 2017 | 9.4 | $69.95 |
| Jan 2016 | 9.4 | $79.95 |
| Oct 2014 | 9.4 | $99.99 |
| Dec 2023 | 8.5 | $58.00 |
| Nov 2023 | 8.0 | $59.40 |
| Aug 2022 | 8.0 | $55.00 |
| Feb 2017 | 8.0 | $55.00 |
| Apr 2015 | 8.0 | $70.00 |
| Jan 2023 | 7.5 | $60.00 |
| Jul 2025 | 6.5 | $85.00 |
| Aug 2023 | 6.0 | $76.00 |
| Sep 2023 | 5.0 | $76.00 |
| Mar 2023 | 4.0 | $42.00 |