| Sold | Grade | Monthly Average |
| Dec 2025 | 7.5 | $7.49 |
| May 2026 | 4.0 | $4.00 |
| Jan 2015 | 9.4 | $3.00 |
| Nov 2014 | 9.4 | $3.00 |
| Dec 2013 | 9.4 | $3.00 |
| Jan 2012 | 9.4 | $3.40 |
| May 2010 | 9.4 | $1.10 |
| Mar 2010 | 9.4 | $1.10 |
| Jul 2008 | 9.4 | $3.50 |
| May 2004 | 9.4 | $2.80 |
| Feb 2004 | 9.4 | $4.00 |
| Jan 2004 | 9.4 | $4.95 |
| Dec 2003 | 9.4 | $4.95 |
| Nov 2020 | 9.2 | $10.00 |
| Aug 2012 | 8.0 | $2.40 |
| Apr 2011 | 8.0 | $2.40 |
| Jan 2006 | 8.0 | $2.80 |
| Apr 2004 | 8.0 | $2.28 |
| Sep 2021 | 6.5 | $6.49 |
| Dec 2021 | 6.0 | $6.00 |
| Aug 2020 | 4.0 | $4.40 |