| Sold | Grade | Monthly Average |
| Jan 2017 | 5.0 | $9.60 |
| Aug 2020 | 4.0 | $8.00 |
| Nov 2017 | 4.0 | $3.84 |
| Aug 2015 | 4.0 | $5.40 |
| Aug 2017 | 3.5 | $3.42 |
| Apr 2021 | 3.0 | $5.60 |
| Dec 2020 | 3.0 | $6.30 |
| Mar 2015 | 3.0 | $3.99 |
| Apr 2019 | 2.0 | $3.80 |
| Aug 2012 | 2.0 | $5.00 |
| Jun 2012 | 2.0 | $2.35 |
| Jul 2018 | 1.8 | $3.60 |
| Sep 2013 | 1.5 | $2.30 |