| Sold | Grade | Monthly Average |
| Apr 2026 | 3.5 | $2.80 |
| Apr 2014 | 8.0 | $4.30 |
| Mar 2021 | 6.5 | $8.60 |
| Apr 2013 | 6.0 | $3.95 |
| Apr 2023 | 4.0 | $5.70 |
| Oct 2019 | 4.0 | $2.40 |
| Oct 2014 | 4.0 | $1.60 |
| Mar 2014 | 4.0 | $1.75 |
| Aug 2012 | 4.0 | $1.40 |
| Jun 2021 | 3.5 | $4.10 |
| Jul 2020 | 2.5 | $2.00 |
| May 2018 | 2.5 | $2.10 |
| Nov 2012 | 2.0 | $1.20 |
| Jul 2002 | 2.0 | $2.00 |