| Sold | Grade | Monthly Average |
| Aug 2012 | 6.0 | $8.10 |
| Oct 2014 | 5.0 | $6.17 |
| Nov 2025 | 4.0 | $6.27 |
| Sep 2018 | 4.0 | $6.50 |
| Apr 2018 | 4.0 | $5.70 |
| May 2016 | 4.0 | $9.75 |
| Feb 2016 | 4.0 | $6.00 |
| Oct 2013 | 3.5 | $4.30 |
| Jun 2018 | 2.5 | $3.60 |
| Feb 2013 | 2.5 | $3.20 |
| Sep 2018 | 2.0 | $3.00 |
| Oct 2015 | 1.8 | $2.40 |
| Sep 2022 | 1.0 | $2.00 |