| Sold | Grade | Monthly Average |
| Jul 2010 | 9.4 | $1.10 |
| Jan 2009 | 9.4 | $1.49 |
| Mar 2005 | 9.4 | $1.00 |
| Dec 2017 | 8.0 | $1.70 |
| Jul 2017 | 8.0 | $1.70 |
| Dec 2014 | 8.0 | $1.10 |
| Jan 2014 | 8.0 | $0.81 |
| Aug 2012 | 8.0 | $1.30 |
| Jun 2024 | 6.0 | $2.50 |
| Apr 2024 | 6.0 | $1.00 |
| Mar 2024 | 6.0 | $1.00 |
| Nov 2023 | 6.0 | $1.00 |
| Sep 2018 | 6.0 | $1.70 |
| Mar 2018 | 6.0 | $1.70 |
| Oct 2014 | 6.0 | $1.10 |
| Jul 2025 | 4.0 | $2.65 |
| Feb 2025 | 4.0 | $1.00 |
| Mar 2021 | 4.0 | $2.00 |
| Feb 2021 | 4.0 | $2.00 |
| Jun 2020 | 4.0 | $2.00 |