Delmarva is a Dun Pebbles Saddlebred. It is a run of 100 pieces. These were released at the CRAB show in Maryland in December 2007.
There is some discrepancy about the run number; Stone had advertised a run of 100, but the former show holder (over 18 years later) says it was a run of 30; 15 matte and 15 glossy. The CRAB show specials for 2004, 2005 and 2006 were all 100 piece runs, so this would be the first year the runs changed to a quantity of 30. Unfortunately this information cannot be confirmed by Stone.