| Sold | Grade | Monthly Average |
| Apr 2024 | 4.0 | $4.00 |
| Aug 2022 | 9.4 | $13.00 |
| Feb 2022 | 9.4 | $18.00 |
| Sep 2018 | 9.4 | $8.75 |
| May 2013 | 9.4 | $7.20 |
| Dec 2012 | 9.4 | $5.84 |
| Mar 2012 | 9.4 | $11.70 |
| Nov 2011 | 9.4 | $5.30 |
| Jun 2011 | 9.4 | $4.70 |
| Feb 2020 | 9.2 | $35.00 |
| Nov 2019 | 9.2 | $28.00 |
| Dec 2009 | 9.2 | $3.98 |
| Jun 2021 | 8.0 | $8.00 |
| Dec 2020 | 8.0 | $8.00 |
| Feb 2018 | 8.0 | $6.00 |
| Mar 2017 | 8.0 | $5.20 |
| May 2014 | 8.0 | $2.60 |
| Dec 2019 | 6.0 | $3.10 |