| Sold | Grade | Monthly Average |
| Aug 2016 | 5.0 | $4.80 |
| Jan 2020 | 4.5 | $4.40 |
| Jan 2019 | 4.5 | $4.40 |
| Feb 2024 | 4.0 | $4.00 |
| Apr 2023 | 4.0 | $4.00 |
| Feb 2018 | 4.0 | $4.00 |
| Feb 2010 | 4.0 | $1.60 |
| Dec 2022 | 3.0 | $15.00 |
| Oct 2022 | 3.0 | $12.50 |
| Jul 2016 | 3.0 | $1.60 |
| Jul 2010 | 2.5 | $2.40 |
| Jun 2021 | 2.0 | $1.90 |