| Sold | Grade | Monthly Average |
| Jan 2013 | 6.5 | $40.00 |
| Mar 2023 | 6.0 | $56.00 |
| Oct 2021 | 6.0 | $54.00 |
| Aug 2016 | 6.0 | $27.00 |
| Sep 2020 | 5.5 | $105.00 |
| Oct 2017 | 4.0 | $18.00 |
| Apr 2015 | 4.0 | $20.00 |
| Jan 2013 | 3.5 | $17.60 |
| Sep 2022 | 3.0 | $49.95 |
| Sep 2014 | 3.0 | $14.00 |
| Apr 2023 | 2.0 | $34.10 |
| Apr 2021 | 2.0 | $36.00 |
| Oct 2020 | 2.0 | $34.00 |
| Jun 2018 | 2.0 | $9.00 |
| Jan 2010 | 1.5 | $6.30 |