| Sold | Grade | Monthly Average |
| Aug 2020 | 4.5 | $8.80 |
| Jul 2022 | 4.0 | $10.50 |
| Mar 2020 | 4.0 | $8.75 |
| Feb 2020 | 4.0 | $8.75 |
| Aug 2011 | 4.0 | $6.00 |
| Jun 2024 | 3.5 | $8.30 |
| Mar 2017 | 3.5 | $6.40 |
| Dec 2015 | 3.5 | $7.50 |
| Jan 2016 | 3.0 | $6.00 |
| Feb 2013 | 3.0 | $2.95 |
| Jun 2025 | 2.0 | $3.70 |
| Jun 2020 | 2.0 | $3.20 |
| Sep 2017 | 2.0 | $4.00 |
| Mar 2013 | 2.0 | $3.65 |
| May 2019 | 1.8 | $2.49 |
| Aug 2014 | 1.8 | $4.10 |
| Feb 2013 | 1.8 | $2.20 |