| Sold | Grade | Monthly Average |
| Jan 2022 | 3.0 | $8.20 |
| Aug 2018 | 3.0 | $8.50 |
| Oct 2010 | 2.5 | $7.20 |
| Apr 2024 | 2.0 | $60.00 |
| Nov 2022 | 2.0 | $5.00 |
| Apr 2022 | 2.0 | $5.00 |
| Jun 2019 | 2.0 | $5.49 |
| Mar 2018 | 2.0 | $5.22 |
| Dec 2015 | 2.0 | $6.50 |
| May 2011 | 2.0 | $6.00 |
| Jul 2010 | 2.0 | $6.00 |
| Jun 2020 | 1.8 | $5.20 |
| Apr 2023 | 1.0 | $2.70 |
| Jun 2022 | 1.0 | $2.70 |