| Sold | Grade | Monthly Average |
| Jul 2011 | 8.0 | $39.90 |
| Feb 2019 | 6.0 | $28.00 |
| Jul 2021 | 5.0 | $19.50 |
| Sep 2016 | 5.0 | $22.00 |
| Dec 2021 | 4.0 | $17.00 |
| Dec 2016 | 4.0 | $19.00 |
| Mar 2013 | 4.0 | $15.70 |
| Dec 2022 | 2.0 | $7.00 |
| Jul 2021 | 2.0 | $7.00 |
| Feb 2020 | 2.0 | $7.00 |
| Nov 2019 | 2.0 | $6.30 |
| Feb 2023 | 1.5 | $4.90 |