| Sold | Grade | Monthly Average |
| Sep 2022 | 9.0 | $139.95 |
| Jul 2019 | 8.5 | $32.30 |
| Mar 2014 | 8.5 | $56.95 |
| Jan 2025 | 7.5 | $70.00 |
| Apr 2013 | 7.5 | $69.96 |
| Jan 2013 | 7.5 | $30.00 |
| Mar 2023 | 7.0 | $58.00 |
| Apr 2020 | 7.0 | $42.61 |
| Jan 2012 | 7.0 | $28.00 |
| Aug 2011 | 7.0 | $26.60 |
| Aug 2024 | 6.5 | $10.00 |
| Apr 2024 | 6.0 | $34.00 |
| Feb 2024 | 6.0 | $23.00 |
| Mar 2013 | 6.0 | $24.00 |
| Jul 2022 | 5.5 | $35.00 |
| Aug 2014 | 4.5 | $37.00 |
| Sep 2011 | 4.5 | $18.00 |
| Dec 2020 | 4.0 | $27.50 |
| Apr 2017 | 4.0 | $15.20 |
| Sep 2019 | 3.0 | $11.40 |