| Sold | Grade | Monthly Average |
| Mar 2021 | 5.5 | $35.50 |
| Jul 2020 | 5.5 | $35.50 |
| Sep 2012 | 5.5 | $12.65 |
| Jul 2018 | 4.0 | $26.00 |
| Aug 2018 | 3.5 | $21.00 |
| Feb 2018 | 3.5 | $8.77 |
| Oct 2017 | 3.0 | $9.68 |
| Dec 2013 | 3.0 | $19.35 |
| May 2024 | 2.0 | $8.00 |
| Jun 2022 | 2.0 | $13.00 |
| Sep 2018 | 2.0 | $13.00 |
| Feb 2016 | 2.0 | $14.00 |
| Mar 2010 | 2.0 | $12.00 |
| Nov 2022 | 1.8 | $10.50 |
| Jun 2025 | 1.5 | $13.00 |