| Sold | Grade | Monthly Average |
| Feb 2026 | 3.5 | $89.00 |
| Dec 2025 | 1.8 | $76.00 |
| Nov 2012 | 6.0 | $37.00 |
| Sep 2017 | 5.5 | $83.00 |
| Dec 2014 | 4.0 | $41.50 |
| Apr 2023 | 3.5 | $80.00 |
| Dec 2022 | 3.5 | $71.25 |
| Jun 2018 | 3.5 | $57.00 |
| Sep 2020 | 2.5 | $41.00 |
| Jul 2015 | 2.5 | $17.00 |
| May 2022 | 2.0 | $60.00 |
| Sep 2018 | 1.8 | $47.50 |
| Jun 2018 | 1.8 | $29.45 |
| May 2015 | 1.0 | $14.90 |
| May 2013 | 1.0 | $15.75 |
| Sep 2014 | 0.1 | $3.75 |