| Sold | Grade | Monthly Average |
| Mar 2019 | 9.4 | $107.50 |
| Jan 2019 | 9.4 | $89.99 |
| Mar 2018 | 9.4 | $69.00 |
| Jan 2018 | 9.4 | $59.95 |
| Oct 2017 | 9.4 | $59.95 |
| Sep 2017 | 9.4 | $71.00 |
| May 2017 | 9.4 | $59.95 |
| Feb 2017 | 9.4 | $70.00 |
| May 2014 | 9.4 | $74.95 |
| Mar 2014 | 9.4 | $74.95 |
| Feb 2014 | 9.4 | $67.46 |
| Oct 2012 | 9.4 | $90.00 |
| Dec 2011 | 9.4 | $71.10 |
| Oct 2011 | 9.4 | $79.00 |
| Mar 2020 | 8.5 | $31.00 |
| Dec 2013 | 8.0 | $56.70 |
| Aug 2016 | 6.0 | $44.00 |
| Feb 2021 | 4.0 | $60.00 |