If anyone has access to the Stanley Gibbons catalogue
that shows this fallacy (pre 1933) I would be delighted
to receive a scan of this page

My earliest catalogue is 1949
SLATIN PASHA, PHILATELIST.
Beneath an illustration of the familiar Sudan camel stamp in
Gibbons' Catalogue, there appeared at one time the picturesque, but wholly fallacious
description, "Slatin Pasha on a Dromedary." The supposition was a pardonable one in
view of the prominent part played by this Austrian nobleman in the history of that
country. As Governor of Darfur, under General Gordon, he was captured by the Mahdi
and held prisoner for twelve years at Omdurman, whence he finally escaped and rendered
signal service on the Intelligence Staff of Kitchener's Anglo-Egyp-
tian Army engaged in the reconquest of the Sudan.
In recognition of his valuable work he
was counted an Honorary Major-General in the British Army, with the decorations of
G.C.V.O., K.C.M.G., and C.B. On the outbreak of the World War, however, he
renounced his English honors and returned to his own country.
Baron Rudolph von Slatin now lives in retirement at Meran, in the Tyrol, where he
recently celebrated his seventy-fifth birthday. In an interview he confessed that one of the
chief solaces of his old age was stamp collecting.
I am presuming it to be this issue
