Offer Price £1,200
1905 (Feb-March) correspondence ex De La Rue archives, concerning experiments undertaken by official scientists in Trinidad and London to ascertain the possibility of removing cancellations from used stamps, using various reagents. The results were used by De La Rue to justify (and refine) their use of doubly fugitive inks in stamp printing. The hightlight is a sheet of paper (170x265mm) with extensive M/S and typewritten endorsements, to which have been affixed NINE examples of a specially pepared ½d black/red colour trial, wmk MCA, as 1904-09 issue, but LINE perf 13¾. Each with diagonal M/S endorsement (14/3/05/Cancelled) and all but one with 'ALEXANDRIA 31/12/77' experimental cds, as previously supplied to the British P.O. at Alexandria, Egypt (!), with notes as to the chemical treatments to which they were subjected. This document is headed 'GOVERNMENT LABORATORY, TRINIDAD, 3 Feby. 1905', but the M/S date on the stamps, and a red M/S note at lower left 'The stamps on the original were 1d stamps' suggests that this is a duplicate of the original tests, as an accompanying letter to DLR from Hugo Muller, dated 16/3/05, appears to confirm. A unique and fascinating assembly. We are not aware of the existance of any other examples of these ½d trials, and we have seen nothing similar relating to any British colony.