| Sold | Grade | Monthly Average |
| Nov 2025 | 9.4 | $59.00 |
| Feb 2026 | 9.2 | $37.90 |
| Nov 2025 | 7.0 | $38.00 |
| Feb 2025 | 9.4 | $65.00 |
| Mar 2024 | 9.4 | $45.00 |
| Jan 2018 | 9.4 | $1.53 |
| Jul 2015 | 9.4 | $1.70 |
| Jan 2014 | 9.4 | $2.00 |
| Dec 2010 | 9.4 | $1.30 |
| Aug 2025 | 9.0 | $40.00 |
| Dec 2020 | 8.0 | $4.00 |
| Apr 2017 | 8.0 | $1.70 |
| Sep 2023 | 6.5 | $33.00 |