| Sold | Grade | Monthly Average |
| Jan 2026 | 3.0 | $11.50 |
| Oct 2016 | 4.5 | $13.00 |
| Dec 2011 | 4.5 | $12.35 |
| Sep 2025 | 4.0 | $16.00 |
| Aug 2023 | 4.0 | $12.00 |
| Sep 2015 | 4.0 | $12.00 |
| Dec 2016 | 3.5 | $10.50 |
| Apr 2019 | 3.0 | $9.20 |
| Jul 2012 | 3.0 | $10.40 |
| Jul 2017 | 2.5 | $7.90 |
| Aug 2023 | 2.0 | $6.60 |
| Aug 2020 | 2.0 | $7.80 |
| Feb 2023 | 1.0 | $3.90 |
| Dec 2013 | 1.0 | $3.90 |