| Sold | Grade | Monthly Average |
| Jul 2020 | 9.4 | $2.00 |
| Aug 2011 | 9.4 | $2.00 |
| May 2011 | 9.4 | $2.00 |
| Apr 2007 | 9.4 | $1.00 |
| Jun 2025 | 8.0 | $2.65 |
| May 2023 | 8.0 | $2.50 |
| Sep 2022 | 8.0 | $2.40 |
| Mar 2022 | 8.0 | $2.40 |
| Feb 2022 | 8.0 | $2.40 |
| Oct 2007 | 8.0 | $1.00 |
| May 2007 | 8.0 | $0.88 |
| Jun 2025 | 6.0 | $1.00 |
| Sep 2023 | 6.0 | $2.50 |
| Apr 2022 | 6.0 | $2.00 |
| Jan 2022 | 6.0 | $2.00 |
| May 2021 | 6.0 | $2.00 |
| Dec 2019 | 6.0 | $2.00 |
| Dec 2017 | 6.0 | $1.70 |
| Feb 2013 | 6.0 | $1.20 |
| May 2007 | 6.0 | $0.75 |