B I O T 136-139, 140 ad sheet

British Indian Ocean Territory 136-139, 140 ad sheet, MNH, $16.10. Michel 136-139, 140-143 Bl.4. Royal Air Force, 75th Ann. 1993. Vickers Virginia, Bristol Bulldog, Short Sunderland, Bristol Blenheim IV. Douglas Dakota, Gloster Javelin, Vickers VC-10, Blackburn Beverley.