| Sold | Grade | Monthly Average |
| Feb 2024 | 9.4 | $6.00 |
| Oct 2015 | 9.4 | $3.00 |
| Oct 2013 | 9.4 | $3.00 |
| Oct 2011 | 9.4 | $4.00 |
| Jan 2011 | 9.4 | $1.60 |
| Oct 2010 | 9.4 | $1.30 |
| Jul 2010 | 9.4 | $1.10 |
| Feb 2021 | 8.0 | $3.20 |
| Oct 2019 | 8.0 | $3.20 |
| May 2019 | 8.0 | $3.20 |
| Feb 2018 | 8.0 | $1.70 |
| Jan 2018 | 8.0 | $1.70 |
| Jul 2017 | 8.0 | $1.70 |
| May 2016 | 8.0 | $2.40 |
| Nov 2014 | 8.0 | $2.40 |
| Jul 2014 | 8.0 | $2.40 |
| Apr 2014 | 8.0 | $2.40 |
| Jan 2019 | 6.0 | $2.40 |
| Feb 2011 | 6.0 | $1.00 |
| Apr 2020 | 5.0 | $2.00 |