| Sold | Grade | Monthly Average |
| Jun 2021 | 9.4 | $75.48 |
| Jan 2021 | 9.4 | $75.48 |
| Nov 2020 | 9.4 | $68.48 |
| Oct 2020 | 9.4 | $90.00 |
| Jun 2020 | 9.4 | $69.95 |
| Nov 2019 | 9.4 | $55.96 |
| Jan 2017 | 9.4 | $69.95 |
| Oct 2016 | 9.4 | $82.47 |
| Aug 2016 | 9.4 | $76.24 |
| Feb 2026 | 8.0 | $84.00 |
| May 2023 | 8.0 | $55.00 |
| Dec 2024 | 7.0 | $78.00 |