| Sold | Grade | Monthly Average |
| Feb 2026 | 6.0 | $2.65 |
| Nov 2014 | 9.4 | $1.10 |
| Sep 2014 | 9.4 | $1.10 |
| Apr 2014 | 9.4 | $1.10 |
| Dec 2012 | 9.4 | $1.20 |
| Jul 2012 | 9.4 | $1.35 |
| Jul 2011 | 9.4 | $1.10 |
| May 2011 | 9.4 | $1.10 |
| Dec 2010 | 9.4 | $1.10 |
| Oct 2010 | 9.4 | $1.00 |
| Aug 2010 | 9.4 | $1.00 |
| Jul 2010 | 9.4 | $1.00 |
| Jun 2010 | 9.4 | $1.00 |
| Sep 2025 | 8.0 | $2.65 |
| Mar 2014 | 8.0 | $0.90 |
| Dec 2022 | 6.0 | $2.00 |
| Jan 2021 | 6.0 | $1.80 |
| Aug 2020 | 6.0 | $2.00 |
| Dec 2018 | 6.0 | $1.70 |