Transvaal Revenues 1902 KEVII De La Rue Ink Recipes £25

1902 KEVII DE LA RUE INK RECIPES: Queen Victoria profile sample stamps inscribed "De La Rue & Co / London": Two examples for potential £25 sample colours of black and geranium lake affixed on page from the printers Ink Recipes. Various self-explanatory recording of the production recipes. The reverse of the page bears recipes for Indian Telegraphs. VF, rare, exceptional archival piece for the production of the iconic £25 top value. Ex Trotter. Fugitive or doubly fugitive inks were used to prevent fraudulent removal of cancellations and other marks by either warm water or solvents in attempts to re-use the stamp.