| Sold | Grade | Monthly Average |
| Apr 2026 | 1.5 | $37.00 |
| Dec 2021 | 4.0 | $120.00 |
| Sep 2012 | 4.0 | $22.99 |
| Aug 2012 | 3.5 | $42.00 |
| Feb 2012 | 3.5 | $15.00 |
| Jun 2025 | 3.0 | $150.00 |
| Nov 2020 | 2.5 | $89.00 |
| Dec 2024 | 2.0 | $80.00 |
| Feb 2021 | 2.0 | $57.00 |
| Nov 2019 | 1.8 | $55.00 |
| Sep 2017 | 1.5 | $23.75 |
| Mar 2019 | 1.0 | $37.00 |
| Jul 2013 | 1.0 | $16.00 |