| Sold | Grade | Monthly Average |
| Jan 2011 | 5.5 | $13.50 |
| Nov 2016 | 5.0 | $14.25 |
| Aug 2021 | 4.5 | $13.00 |
| Jun 2021 | 4.5 | $13.00 |
| Sep 2022 | 4.0 | $15.00 |
| Jan 2022 | 4.0 | $12.00 |
| Aug 2018 | 4.0 | $12.00 |
| Oct 2017 | 4.0 | $10.80 |
| Mar 2013 | 4.0 | $11.00 |
| Feb 2025 | 3.0 | $22.00 |
| Aug 2022 | 3.0 | $9.20 |
| Dec 2025 | 2.0 | $13.75 |
| Jul 2020 | 2.0 | $6.60 |
| Jul 2013 | 2.0 | $5.49 |
| Aug 2010 | 2.0 | $5.49 |
| Sep 2019 | 1.8 | $5.70 |
| Nov 2018 | 1.8 | $5.70 |
| Feb 2024 | 1.0 | $3.60 |