| Sold | Grade | Monthly Average |
| Aug 2025 | 2.0 | $6.00 |
| Dec 2025 | 1.0 | $2.90 |
| Jul 2014 | 4.5 | $7.90 |
| Mar 2023 | 4.0 | $7.20 |
| Nov 2021 | 4.0 | $6.48 |
| Nov 2019 | 4.0 | $7.20 |
| Feb 2018 | 4.0 | $7.20 |
| Sep 2012 | 4.0 | $7.20 |
| Apr 2016 | 3.5 | $5.89 |
| Mar 2012 | 3.0 | $5.40 |
| Jun 2016 | 2.5 | $4.60 |
| Feb 2015 | 2.5 | $4.95 |
| Oct 2020 | 2.0 | $3.90 |
| Sep 2018 | 2.0 | $3.90 |
| Sep 2020 | 1.5 | $2.90 |