| Sold | Grade | Monthly Average |
| Sep 2014 | 9.4 | $16.50 |
| Jun 2010 | 9.2 | $50.00 |
| Aug 2010 | 8.5 | $43.00 |
| Dec 2018 | 8.0 | $1.70 |
| May 2018 | 8.0 | $1.70 |
| Jan 2018 | 8.0 | $1.70 |
| Mar 2017 | 8.0 | $4.00 |
| Jan 2017 | 8.0 | $3.20 |
| Aug 2016 | 8.0 | $4.00 |
| Jun 2016 | 8.0 | $3.20 |
| Feb 2016 | 8.0 | $3.70 |
| Nov 2019 | 6.0 | $2.40 |
| May 2015 | 6.0 | $4.30 |