| Sold | Grade | Monthly Average |
| Apr 2026 | 8.0 | $2.65 |
| May 2023 | 9.4 | $3.00 |
| Jan 2020 | 9.4 | $3.00 |
| Apr 2019 | 9.4 | $3.00 |
| Aug 2016 | 9.4 | $1.35 |
| Dec 2013 | 9.4 | $4.00 |
| Jan 2013 | 9.4 | $5.49 |
| Nov 2012 | 9.4 | $5.40 |
| Aug 2012 | 9.4 | $4.30 |
| Nov 2011 | 9.4 | $6.30 |
| Sep 2011 | 9.4 | $7.00 |
| Jul 2011 | 9.4 | $6.49 |
| Jun 2025 | 8.0 | $2.65 |
| Feb 2024 | 8.0 | $2.50 |
| Nov 2019 | 8.0 | $2.40 |
| Jun 2017 | 8.0 | $1.70 |
| Nov 2015 | 8.0 | $2.10 |
| Apr 2024 | 6.0 | $2.50 |
| Aug 2021 | 6.0 | $2.00 |