cover 1866 (15 Apr.) envelope from Mrs. Nightingale at Balerity Modere "Via Bombay" to her husband, a Major serving with the 3rd. Hyderabad Cavalry at Bolarum, bearing 1863-66 1d. dark blue and 2d. grey-green (2), in combination with India 1856-64 2a. orange, all tied by penstrokes and cancelled by small oval of 12 bars, marked "Ceylon Postage 5d. stamped, India stamped 2 ans." and showing framed "BOMBAY/Bg 2 as"; the reverse shows c.d.s. of Balerity Modere, Galle, Bombay and Bolarum. A unique and highly important combination cover.