| Sold | Grade | Monthly Average |
| Sep 2019 | 9.4 | $49.95 |
| Mar 2018 | 9.4 | $49.95 |
| Mar 2014 | 9.4 | $39.95 |
| Dec 2012 | 9.4 | $34.99 |
| Jan 2011 | 9.4 | $35.00 |
| Dec 2010 | 9.4 | $35.00 |
| Nov 2010 | 9.4 | $35.00 |
| Oct 2010 | 9.4 | $35.00 |
| Sep 2010 | 9.4 | $35.00 |
| Jun 2010 | 9.4 | $39.99 |
| May 2022 | 8.0 | $50.00 |
| Dec 2019 | 8.0 | $36.00 |
| Jun 2019 | 8.0 | $40.00 |
| Oct 2022 | 6.0 | $36.00 |
| May 2015 | 6.0 | $28.00 |
| Jun 2025 | 4.0 | $21.60 |