Workers ½ mark orange imperforated (4x), 1 mark browm imperforated (8x including block of 7), 2 mark green imperforated, 2½ mark red imperforated, 5 mark carmine imperforated and 9 mark orange red imperforated (2x) on front and reverse of registered cover from Tallinn 3-1-1924 to Brussels, fine/very fine (cut open at 3 sides)