| Sold | Grade | Monthly Average |
| Feb 2026 | 3.5 | $16.15 |
| Feb 2023 | 6.5 | $128.25 |
| Jun 2015 | 6.0 | $21.20 |
| Oct 2015 | 5.5 | $32.50 |
| Oct 2022 | 4.5 | $26.50 |
| Jul 2021 | 3.0 | $10.00 |
| Nov 2012 | 3.0 | $16.90 |
| Jan 2015 | 2.5 | $19.25 |
| Mar 2024 | 2.0 | $7.20 |
| Jan 2024 | 2.0 | $10.00 |
| Aug 2021 | 2.0 | $7.20 |
| May 2021 | 2.0 | $7.20 |
| Jul 2019 | 1.5 | $14.50 |