| Sold | Grade | Monthly Average |
| May 2018 | 9.4 | $79.00 |
| Feb 2018 | 9.4 | $49.95 |
| Jan 2018 | 9.4 | $49.95 |
| Nov 2016 | 9.4 | $49.95 |
| Aug 2016 | 9.4 | $49.95 |
| Oct 2015 | 9.4 | $67.00 |
| Jul 2014 | 9.4 | $54.95 |
| May 2012 | 9.4 | $88.00 |
| Jan 2011 | 9.4 | $55.00 |
| Dec 2010 | 9.4 | $55.00 |
| Nov 2010 | 9.4 | $51.67 |
| May 2010 | 9.4 | $52.50 |
| Dec 2009 | 9.4 | $60.00 |
| Jun 2009 | 9.4 | $60.00 |
| Oct 2020 | 9.2 | $65.00 |
| Dec 2020 | 8.0 | $63.20 |
| Jul 2020 | 6.0 | $59.00 |
| Aug 2018 | 6.0 | $30.00 |