| Sold | Grade | Monthly Average |
| Jan 2023 | 5.5 | $10.50 |
| Oct 2011 | 5.5 | $23.00 |
| Mar 2017 | 4.0 | $19.50 |
| May 2021 | 3.0 | $8.40 |
| Aug 2017 | 3.0 | $14.00 |
| Jan 2016 | 3.0 | $10.00 |
| Feb 2015 | 2.5 | $8.65 |
| Aug 2022 | 2.0 | $6.00 |
| Nov 2021 | 2.0 | $5.70 |
| Feb 2019 | 2.0 | $7.20 |
| Jul 2016 | 2.0 | $7.20 |
| Feb 2014 | 1.8 | $8.40 |