| Sold | Grade | Monthly Average |
| Apr 2026 | 3.5 | $12.59 |
| Aug 2013 | 4.5 | $13.00 |
| Jul 2021 | 4.0 | $25.00 |
| Jun 2021 | 3.5 | $22.00 |
| Mar 2015 | 3.5 | $13.00 |
| Jan 2014 | 3.0 | $8.40 |
| Nov 2009 | 3.0 | $8.40 |
| May 2021 | 2.0 | $6.49 |
| Jun 2020 | 2.0 | $7.79 |
| Dec 2019 | 2.0 | $7.79 |
| May 2019 | 2.0 | $7.79 |
| May 2016 | 1.8 | $6.49 |
| Aug 2014 | 1.5 | $6.15 |
| Dec 2023 | 0.5 | $2.50 |