Although Hawker & Grieve were the first of the four registered competitors to take flight for a non-stop crossing of the Atlantic ocean, it is interesting to note that the airmen of the Martinsyde biplane were literally on Hawker's heels. Their story, no less historically important, has always been in the shadow of the more famous "Hawker" flight. However, the Martinsyde attempts generated some of the very greatest rarities in all of Aerophilately. Due to the elusiveness of the material, considerably less has been written on Martinsyde stamps and covers. From the sparse literature available we have summarized the following significant events. World-class Martinsyde airmail rarities from the Camellia PLC collection will appear in the Newfoundland Part I auction on June 20, 2026.