| Sold | Grade | Monthly Average |
| Oct 2023 | 1.0 | $28.00 |
| Feb 2022 | 5.5 | $160.00 |
| May 2021 | 5.0 | $165.00 |
| Oct 2019 | 4.5 | $50.00 |
| Apr 2021 | 4.0 | $77.00 |
| May 2018 | 4.0 | $99.00 |
| Oct 2022 | 3.0 | $82.00 |
| Apr 2016 | 3.0 | $52.00 |
| Dec 2022 | 2.5 | $65.00 |
| Aug 2017 | 2.5 | $40.00 |
| Dec 2019 | 2.0 | $49.00 |
| Jun 2014 | 2.0 | $12.00 |
| May 2020 | 1.8 | $24.00 |
| Jan 2020 | 1.8 | $32.00 |
| Aug 2018 | 1.8 | $54.00 |
| Jan 2011 | 1.5 | $34.00 |
| Jun 2022 | 1.0 | $14.25 |