| Sold | Grade | Monthly Average |
| Oct 2012 | 5.5 | $71.10 |
| Oct 2011 | 5.5 | $129.00 |
| Nov 2012 | 5.0 | $24.72 |
| Oct 2012 | 5.0 | $48.00 |
| Jun 2023 | 3.5 | $165.00 |
| Aug 2017 | 3.5 | $79.20 |
| Jul 2012 | 3.5 | $24.00 |
| May 2012 | 3.5 | $25.00 |
| Apr 2012 | 3.5 | $32.00 |
| Oct 2023 | 3.0 | $81.00 |
| Apr 2022 | 3.0 | $105.00 |
| Dec 2017 | 3.0 | $77.00 |
| Jan 2013 | 2.5 | $21.00 |
| Jul 2023 | 2.0 | $89.00 |
| May 2013 | 2.0 | $15.00 |