1893 (Dec 29) "Appendix" sheet (202x235mm, slightly reduced for display) with nine keyplate essays neatly arranged by face value, in three columns of three. The left column comprises 1d, 6d and 1s essays from the general keyplate (already in use for the Turks Is ½d, 2½d and 4d values) in the existing colours of carmine, yellow-brown and sepia (as SG 59, 60, 62/4, still being printed from the old Perkins Bacon engraved plates of 30), while the second column has alternatives for the same values and colours, but from the "POSTAGE" keyplate. The third column presents a second set from the "POSTAGE" keyplate, but now with the duties in a second colour (1d carmine and violet, 6d yellow-brown and green, 1s sepia and mauve). Each essay features HANDPAINTED duties (country name "TURKS ISLANDS" and value), except that the two 6d "POSTAGE" essays have the value tablets printed at a second operation, all being imperforate on unwatermarked paper. Two light horizontal folds, one affecting the top row, but lovely fresh condition, with M/S date and heading at top, and discreet red ticks by each essay, complemented by further M/S date "1/1/94" and initials in the same ink at lower right, indicating approval. A unique and wonderful item, ex De La Rue archives (see "The De La Rue Collection" p.6436), discussed by Easton, De La Rue History, p.531, with six of the nine essays illustrated on his plate 32. This was an unsolicited proposal to the Crown Agents by De La Rue, in their continuing attempt to abandon the old Perkins Bacon plates (small and inconvenient) and replace them with surface-printed keyplate issues. In the event, these three values were never produced by surface-printing, but the "POSTAGE" keyplate was adopted for the new 5d value (SG 72) a few months later.