| Sold | Grade | Monthly Average |
| Feb 2012 | 9.4 | $1.30 |
| Oct 2019 | 8.0 | $2.16 |
| Aug 2019 | 8.0 | $2.40 |
| Oct 2014 | 8.0 | $1.10 |
| May 2013 | 8.0 | $1.20 |
| Jun 2025 | 6.0 | $2.70 |
| May 2025 | 6.0 | $2.50 |
| Sep 2023 | 6.0 | $2.50 |
| Sep 2022 | 6.0 | $2.00 |
| Jul 2021 | 6.0 | $2.00 |
| Mar 2019 | 6.0 | $1.80 |
| Jul 2014 | 6.0 | $0.80 |
| Oct 2013 | 6.0 | $0.80 |
| Sep 2019 | 4.0 | $2.00 |
| Nov 2017 | 4.0 | $1.70 |
| Jul 2017 | 4.0 | $1.70 |