| Sold | Grade | Monthly Average |
| Apr 2022 | 6.0 | $3.60 |
| Jun 2020 | 6.0 | $4.60 |
| Jul 2022 | 5.0 | $2.80 |
| Feb 2017 | 5.0 | $2.16 |
| Dec 2017 | 4.5 | $1.70 |
| Nov 2014 | 4.5 | $1.20 |
| Mar 2024 | 4.0 | $2.50 |
| Sep 2011 | 4.0 | $1.20 |
| May 2019 | 3.5 | $1.70 |
| May 2018 | 3.5 | $1.70 |
| Dec 2014 | 3.5 | $1.30 |
| Feb 2015 | 3.0 | $1.10 |
| Feb 2025 | 2.5 | $2.50 |