| Sold | Grade | Monthly Average |
| Jun 2017 | 9.2 | $32.00 |
| Feb 2014 | 9.2 | $39.00 |
| Sep 2011 | 9.2 | $40.00 |
| Mar 2012 | 8.0 | $35.80 |
| Oct 2017 | 7.5 | $33.00 |
| Oct 2017 | 7.0 | $22.40 |
| Jun 2025 | 5.5 | $16.00 |
| Jul 2022 | 5.5 | $16.00 |
| Nov 2015 | 5.5 | $24.00 |
| Oct 2013 | 5.0 | $20.00 |
| May 2016 | 4.5 | $18.00 |
| Aug 2012 | 4.0 | $18.05 |