| Sold | Grade | Monthly Average |
| Aug 2026 | 3.0 | $53.00 |
| Oct 2021 | 4.0 | $26.00 |
| Aug 2020 | 4.0 | $30.40 |
| Sep 2015 | 4.0 | $21.00 |
| Feb 2021 | 3.5 | $12.75 |
| May 2017 | 3.5 | $22.50 |
| Aug 2025 | 3.0 | $30.00 |
| Feb 2023 | 3.0 | $11.00 |
| Dec 2024 | 2.0 | $11.00 |
| Sep 2020 | 1.5 | $5.60 |
| Jun 2011 | 1.5 | $6.90 |
| May 2013 | 1.0 | $5.50 |