| Sold | Grade | Monthly Average |
| Dec 2023 | 6.0 | $1.00 |
| May 2020 | 9.4 | $1.80 |
| Mar 2020 | 9.4 | $2.00 |
| Jun 2014 | 9.4 | $1.20 |
| Jul 2013 | 9.4 | $1.20 |
| Mar 2012 | 9.4 | $1.10 |
| Jun 2010 | 9.4 | $1.10 |
| Oct 2006 | 9.4 | $1.00 |
| Mar 2005 | 9.4 | $1.00 |
| Jan 2021 | 8.0 | $2.00 |
| May 2019 | 8.0 | $1.70 |
| May 2015 | 8.0 | $1.35 |
| Apr 2014 | 8.0 | $0.90 |
| Jun 2010 | 8.0 | $0.90 |
| Mar 2005 | 8.0 | $0.99 |
| Apr 2022 | 6.0 | $2.00 |
| Mar 2022 | 6.0 | $2.00 |
| Feb 2021 | 6.0 | $2.00 |
| Sep 2013 | 6.0 | $0.80 |
| May 2010 | 6.0 | $0.80 |