1931 Do-X Special Caribbean Flight cover, one of 9 flown from St. John’s, ANTIGUA (20 August cds tied 6d + 2d franking) to St. Thomas, USA VIRGIN ISLANDS (21 August) and from there to Tortola, British Virgin Islands (Road Town bs). Prepared and despatched for the Netherlands consul at St. Thomas, and a major Do-X rarity, very fine (Image)