 | First Day of Issue = September 21, 2012 Size: 117.00 mm x 73.00 mm Quantity printed = 100,000 Perforated 13.25 x 13.25 Print method: Lithography 450 anniversary of the Duchy of Courland and Semigalia. The left stamp shows Duke Jēkabs Ketlers and on the right stamp we see Duke Ernsts Johans Bīrons. Catalog numbers Scott 813 Michel LV Block 30 For more information check out the links below Duchy of Courland and Semigallia Ernst Johann von Biron Jacob Kettler |