used 8a. blue, imperforate horizontal pair, used with "MOMBASA/A/MR 28/92" squared circle cancellations; fine. S.G. 12a, £600. Photo

Details
used 8a. blue, imperforate horizontal pair, used with "MOMBASA/A/MR 28/92" squared circle cancellations; fine. S.G. 12a, £600. Photo