| Sold | Grade | Monthly Average |
| Apr 2012 | 9.8 | $9.60 |
| Nov 2024 | 9.4 | $9.49 |
| Feb 2023 | 9.4 | $7.49 |
| May 2014 | 9.4 | $3.70 |
| Aug 2013 | 9.4 | $4.40 |
| Jun 2013 | 9.4 | $4.40 |
| Mar 2013 | 9.4 | $4.40 |
| Oct 2012 | 9.4 | $6.50 |
| Jul 2012 | 9.4 | $6.50 |
| Jul 2012 | 9.4 | $4.70 |
| Mar 2012 | 9.4 | $6.00 |
| May 2012 | 9.2 | $4.30 |
| Apr 2012 | 9.2 | $4.30 |
| Jul 2024 | 8.0 | $7.20 |
| Apr 2022 | 8.0 | $4.80 |
| Apr 2020 | 8.0 | $3.80 |
| Nov 2018 | 8.0 | $2.60 |
| Jun 2017 | 8.0 | $2.40 |
| Jul 2025 | 6.0 | $6.00 |
| Nov 2017 | 6.0 | $2.60 |
| Aug 2017 | 4.0 | $1.70 |