Crawford Medal

The Crawford Medal is a vermeil medal awarded by the Royal Philatelic Society London for the most valuable and original contribution to the study and knowledge of philately published in book form during the relevant period.

The medal is named after James Lindsay, 26th Earl of Crawford, who by the time of his death in 1913 had amassed the greatest philatelic library of his time.

The society also awards these silver medals:

(Principality of Wallachia 1820-1862, United Principalities 1862-1872 (Completing the work started with the author’s Romania: The Bull’s Heads of Moldavia, 1852-1862)

...
Wikipedia