| Sold | Grade | Monthly Average |
| May 2026 | 1.8 | $4.70 |
| Nov 2016 | 6.5 | $18.00 |
| Nov 2009 | 5.5 | $14.50 |
| Jun 2024 | 4.0 | $10.00 |
| Apr 2023 | 4.0 | $10.00 |
| Feb 2020 | 4.0 | $10.00 |
| Oct 2019 | 4.0 | $10.00 |
| Jul 2018 | 4.0 | $11.00 |
| Jun 2016 | 4.0 | $14.50 |
| Mar 2020 | 3.5 | $8.00 |
| May 2023 | 3.0 | $7.00 |
| Jun 2023 | 2.0 | $5.00 |
| Aug 2019 | 2.0 | $5.00 |
| May 2012 | 2.0 | $4.80 |
| Mar 2010 | 2.0 | $4.80 |
| Nov 2024 | 1.8 | $4.00 |
| Apr 2014 | 1.8 | $4.80 |