拍品英文描述(有請方先生翻譯):
Uganda, 1895, "15" on 10c black with "5" applied in manuscript, surcharge particularly distinct, border on three sides, a little roughly separated as is the case with these great rarities, with part of original envelope still adhering to reverse, cancelled by pen cross, initialed "G.R.B." (Reverend George Robert Blackledge) and dated "7-18-95", a few small faults and staining from the heavy natural brown gum used to affix it to letters, Very Fine example of this excessively rare primitive surcharge and the only instance of a higher value than the face value being surcharged on the original stamp., Illustrated in Stuart Rossiter, "The Early Stamps of Uganda", The London Philatelist, p. 222. S.G. No. 11.
The manuscript surcharges rank among the top order of world rarities. These were produced by the Reverends George R. Blackledge and Ernest M. Millar at Ngagwe and Mengo to satisfy a shortage of stamps of certain denominations and to create new values such as the 15 cowries, the surcharged stamps could also possibly have been intended to pay new rates for which there were no corresponding stamps (e.g. the two covers in the Hind collection from Ngagwe to Mengo each franked with single 15 cowries). On the rarity of the manuscript surcharges, Robson Lowe wrote in his Encyclopedia: "All are rare (we do not recall selling a copy in over 25 years)." A brief survey of Uganda holdings reveals that, other than David Sey, who owned six of the accepted seven values, very few collectors have possessed one in their collection. Ferrary had three, and Hind, whose collection of Uganda was described as "by far the best collection in the World", also owned three (probably the Ferrary examples). Neither Donald Hunt nor Colonel Danson had a single example, and Roy Dunstan only owned a slightly defective example.