| Sold | Grade | Monthly Average |
| Mar 2015 | 9.4 | $10.80 |
| Mar 2010 | 9.4 | $3.70 |
| Dec 2003 | 9.4 | $3.00 |
| Sep 2003 | 9.4 | $1.50 |
| Apr 2023 | 8.0 | $12.00 |
| Sep 2020 | 8.0 | $12.00 |
| Mar 2015 | 8.0 | $8.65 |
| Nov 2011 | 8.0 | $5.90 |
| Apr 2023 | 7.5 | $11.25 |
| Sep 2019 | 7.5 | $7.49 |
| Dec 2019 | 6.5 | $6.49 |
| Jul 2019 | 6.5 | $6.49 |
| Jan 2021 | 6.0 | $9.00 |
| Mar 2019 | 6.0 | $6.00 |
| Apr 2018 | 6.0 | $6.50 |
| Feb 2018 | 6.0 | $6.00 |
| Feb 2016 | 6.0 | $6.00 |
| Dec 2015 | 6.0 | $4.80 |
| Dec 2019 | 5.5 | $5.49 |
| Aug 2016 | 4.5 | $4.49 |