| Sold | Grade | Monthly Average |
| Jun 2020 | 9.4 | $49.99 |
| Aug 2016 | 9.4 | $49.99 |
| Jan 2014 | 9.4 | $39.95 |
| Jan 2013 | 9.4 | $37.75 |
| Dec 2012 | 9.4 | $40.50 |
| Nov 2012 | 9.4 | $39.99 |
| Oct 2012 | 9.4 | $35.99 |
| Jun 2012 | 9.4 | $44.90 |
| Apr 2012 | 9.4 | $44.87 |
| Feb 2012 | 9.4 | $37.99 |
| Jan 2012 | 9.4 | $39.99 |
| Dec 2011 | 9.4 | $38.00 |
| Oct 2011 | 9.4 | $40.00 |
| May 2020 | 8.0 | $40.00 |
| Sep 2017 | 8.0 | $40.00 |
| Sep 2016 | 8.0 | $40.00 |
| Oct 2020 | 6.0 | $30.00 |
| Jan 2015 | 4.0 | $20.00 |
| Feb 2014 | 4.0 | $15.99 |