| Sold | Grade | Monthly Average |
| Feb 2026 | 4.0 | $3.20 |
| Nov 2025 | 4.0 | $3.20 |
| Dec 2025 | 3.0 | $2.90 |
| Apr 2010 | 6.5 | $3.60 |
| Sep 2014 | 6.0 | $3.00 |
| Sep 2011 | 6.0 | $3.00 |
| Aug 2024 | 5.0 | $3.80 |
| Sep 2014 | 4.5 | $1.70 |
| Sep 2021 | 4.0 | $3.20 |
| Oct 2016 | 4.0 | $1.60 |
| Jan 2012 | 4.0 | $1.50 |
| Sep 2020 | 3.5 | $2.00 |
| Nov 2021 | 3.0 | $2.00 |
| Jul 2022 | 2.5 | $2.00 |
| Aug 2013 | 2.5 | $1.20 |
| Jan 2013 | 2.5 | $1.20 |
| Oct 2022 | 2.0 | $2.00 |
| Dec 2013 | 2.0 | $1.15 |
| Feb 2012 | 2.0 | $1.10 |
| Jun 2007 | 2.0 | $1.40 |