| Sold | Grade | Monthly Average |
| Feb 2017 | 6.0 | $246.05 |
| Jan 2017 | 4.0 | $75.00 |
| Sep 2020 | 3.5 | $95.00 |
| Jun 2021 | 3.0 | $110.00 |
| Aug 2014 | 3.0 | $82.55 |
| Jul 2020 | 2.0 | $54.00 |
| Jan 2019 | 2.0 | $38.00 |
| Nov 2017 | 2.0 | $100.00 |
| Feb 2015 | 2.0 | $77.90 |
| Mar 2014 | 2.0 | $25.77 |
| Oct 2013 | 2.0 | $22.00 |
| Feb 2010 | 2.0 | $81.00 |
| Aug 2013 | 1.0 | $40.00 |
| Sep 2012 | 1.0 | $14.00 |
| Jan 2010 | 1.0 | $25.65 |
| Sep 2022 | 0.5 | $38.00 |
| May 2014 | 0.5 | $39.50 |
| Dec 2018 | 0.3 | $36.00 |
| Apr 2018 | 0.3 | $14.20 |