SA: 1931 IMPERIAL AIRWAYS CHRISTMAS FLIGHT LONDON - CAPE TOWN: Imperial Airways special Springbuck envelope franked GB KGV 1/- carried on the inaugural Christmas Flight. Paddington dispatch cds 8 DE placing this letter amongst those sent ahead by rail to Paris from whence joining the "Heracles" flight. On reverse Johannesburg arrival cds 21 DEC 31, Cape Town cds same. VF, attractive.