South Africa. (Great Britain). 1950. Air Mail envelope addressed to London bearing SG 117a, 3d blue and SG 119, 6d green and orange tied by Johannesburg double ring, underpaid with framed 'Over 1/2 OZ/ BO 1/2 ONS' and circular 'T/ X' with '1.6d' in m/s bearing Great Britain postage dues SG D30, 3d violet and SG D33, 1s blue applied and tied by London receiver with hand-struck 'S. D./ 1/ 6/ W.C.' applied on face. Lovely item of postage due mail.