| Sold | Grade | Monthly Average |
| May 2026 | 2.5 | $59.00 |
| May 2015 | 4.5 | $43.60 |
| Nov 2011 | 4.5 | $88.20 |
| Feb 2020 | 3.0 | $140.00 |
| Apr 2020 | 2.0 | $87.49 |
| Sep 2025 | 1.0 | $37.00 |
| Aug 2024 | 1.0 | $90.00 |
| Sep 2020 | 1.0 | $38.00 |
| Jul 2014 | 1.0 | $28.00 |
| May 2023 | 0.5 | $40.00 |
| Aug 2021 | 0.5 | $59.00 |
| Oct 2020 | 0.5 | $42.00 |
| Sep 2018 | 0.5 | $19.95 |