| Sold | Grade | Monthly Average |
| Jan 2018 | 6.0 | $12.00 |
| Nov 2012 | 4.5 | $5.95 |
| Aug 2023 | 4.0 | $6.40 |
| Dec 2022 | 4.0 | $6.08 |
| Nov 2021 | 4.0 | $6.40 |
| Apr 2020 | 3.5 | $6.65 |
| Apr 2018 | 3.5 | $7.00 |
| Aug 2011 | 3.5 | $7.00 |
| Jan 2018 | 3.0 | $6.75 |
| Mar 2025 | 2.5 | $3.80 |
| Jul 2013 | 2.5 | $5.70 |
| Dec 2022 | 2.0 | $3.04 |
| Jun 2022 | 2.0 | $3.20 |
| Oct 2021 | 2.0 | $3.20 |
| Nov 2017 | 2.0 | $2.60 |
| Oct 2017 | 2.0 | $2.47 |
| Apr 2017 | 2.0 | $4.18 |
| Jul 2012 | 2.0 | $1.89 |
| Jun 2010 | 2.0 | $4.40 |
| May 2025 | 1.8 | $2.37 |
| Jun 2014 | 1.8 | $5.49 |
| Apr 2023 | 1.0 | $2.50 |